DSSSB 2019: 1 September, Craft Instructor (Wireman)
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Write here Roll Number and Answer Sheet No. ~------------~I~
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6. All questions are compulsory and carry equal marks. 6. ~ w.f ~ ~ om m"il\lOl\ 3icIi
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answer 0.25 mark will be deducted.
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8. This Booklet contains 200 questions in all comprising the 8. ~ ~ ~ ~ 200w.f t ~ f.lq~Rsd "IWT~ ~ :
following Sections:
"IWT T1t)~~ m~~ ~~ ~
Sections Test Components
No. of
Questions
Page
No.
(31) i) ~~ 20 2-5 '!
(A) i) General Awareness 20 2-5 ii) ~~~ r~tr ~
ii) General Intelligence and (111<1><1> '11'<1(11 20 6 - 11
Reasoning Ability 20 6 -11 iii) ~v.ci~~ 20 12-15 ~ tr
iii) Arithmetical and Numerical Ability 20 12-15
iv) Hindi Language and Comprehension 20 16-17 iv) ~ 'I!fI!f[3fu:~ 20 16-17 It:
v) EnglishLanguageand Comprehension 20 18-19 v) ~ "f1lfT 3fu:~ 20 18-19 IU fie,
~~::::-----:-:--=----+----t----II ~ ~
(B) Post SpecifiCSubject-Related (Of) ~~~-~tftm 100 20-37 ~
Questions 100 20-37
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Examination Hall will be liable for appropriate penaVlegal action. ~t:illd ~/~ ~ ~ "QT;f ~ I
11. The manner in which different questions are to be answered has 11. ~ m ~"N\ ~ ~ fcIfu ~ ~ ~ ~ ~ w: f.$IT
been explained at the back of this Booklet, which you should
read carefully before actually answering the questions.
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12. No Rough Work is to be done on the Answer Sheet. 12. ~~"<61<f~~~~~t I tE;
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Go through instructions given in Page No. 40 (B~ck Cover Page)
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SECTION -A
i) General Awareness
1. In 2019, India carried out an airstrike 6. Which of the following statements are
on terrorist camp in which place in correct regarding the Financial Action
Pakistan? Task Force?
(A) Balakot (B) Pathankot i. FATF is an international policy-
(C) Rawalpindi (0) Baluchistan making body set-up to regulate
2. Which one of the following countries have issues of loan defaults of its member
Anti-Satellite (ASAT) capabilities? countries.
(A) Japan
ii. FATF has 39 member countries.
(B) United Kingdom
Select the correct option.
(C) Italy
(A) Only i
(0) India
(B) Both i and ii
3. Who is the current Chairman of Indian (C) Only ii
Space Research Organisation (ISRO) ? (0) Neither i nor ii
(A) Kiran Kumar
7. India launched its Chandrayaan
(B) K. Sivan
Mission II on
(C) Satheesh Reddy
(A) 21 June 2019
(0) Radhakrishnan Nair
(B) 26 July 2019
4. Which High Court has the jurisdiction over
(C) 22 July 2019
the Andaman and Nicobar Islands?
(0) 20 July 2019
(A) Madras
(B) Culcutta 8. The Mercalli scale is used to measure
(C) Kerala which of the following?
(0) Andhra Pradesh (A) The magnitude of Earthquake
(B) The average rainfall of a region
5. Article 370 of the Indian Constitution
(C) The intensity of Earthquake
abrogated by Govemment of India is
(0) The density of water
related to which of the following State
of India? 9. ---_ is the capital of Bhutan.
(A) Nagaland (A) Katmandu
(B) Jammu & Kashmir (B) Lhasa
(C) Bihar (C) Oarjiling
(0) Arunachal Pradesh (0) Thimphu
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10. Name the current Chairman of
15. Who among the following is the current _
Rajya Sabha. permanent representative to the UN
(A) Om Birla from India?
(A) Syed Akbaruddin
(B) Venkiah Naidu
(B)' Gautam Bambawale
(C) Sumitra Mahajan (C) Nirupama Rao
(D) Hamid Ansari (D) Shashi Tharoor
11. The UNSC Resolution 1267 was in the 16. Mangifera indica is the scientific name
of which of the following?
news recently is related to
(A) Mango (B) Banana
(A) Climate Change Accord (C) Mustard (D) Neem
(B) Designate Masood Azhar as a
17. What is the name of the scheme
global terrorist announced by the Prime Minister Modi
(C) Peace and Stability in Africa in 2019 for Water Conservation and
Household Pipeline Supply?
(D) Children in armed conflict
(A) PM Jal Abhiyan
12. India established diplomatic relations (B) Jal Shakti Mission
(C) Jal Jeevan Mission
with the State of Israel in which year?
(D) Jal Nidhi Mission
(A) 1948 (B) 1962
18. Which Indian Act allows the National
(C) 1988 (D) 1992
Investigation Agency to designata an
13. Wh ich country recently withdrew from the individual as a terrorist?
(A) POT A (B) TADA
Paris Climate Agreement of 2015 ?
(C) UAPA (D) NOTA
(A) Germany
19. Which among the following terrorist
(B) Kingdom of Tonga
groups was responsible for the attack
(C) United States of America on the Indian Parliament in 2001 ?
(D) South Sudan (A) Harket-ul-Mujahideen
(B) AI Qaeda
14. The 123 Agreement is the civil nuclear (C) Jaish-e-Mohammed
agreement between India and which (D) Indian Mujahideen
country ? 20. --- __ is the current National
(A) Australia Security Advisor (NSA) of India.
(B) Japan (A) Shivashankar Menon
(B) Ajit Doval
(C) United States of America
(C) Brajesh Mishra
(D) Russia (D) M.K. Narayanan
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ii) General Intelligence and Reasoning Ability
,
21. In a certain code language, 'si po re'
means 'book is thick', 'ti na re' means 'bag
25. Vikas is more competent than Keshav,
is heavy', 'ka si' means 'interesting book' Shiv is less competent than Ashu but
and 'de ti' means 'that bag'. What should
more competent than Keshav. Vikas is
stand for 'that is interesting' in that code
language? less competent than Shiv. Who is the
(A) ka de re (B) ti po ka most competent in the group?
(C) ka re na (D) de si re
(A) Ashu
22. In a certain code, BASIC is written as
(B) Keshav
DDULE. How is LEADER written in that
code? (C) Vikas
(A) NGCFGT (B) NHCGGU (D) Shiv
(C) OGDFHT (D) OHDGHU
23. Choose the correct altemative that will 26. While facing East you turn to your left
continue the same pattem.
and walk 10 yards. Then, turn to your
1,3,4,8,15,27,?
left and walk 10 yards and now turn 450
(A) 37 (B) 44 to your right and go straight to cover 50
(C) 50 (D) 55
yards. Now, in what direction are you
24. i. FivefriendsP,Q,R,SandTtraveliedto
five different cities of Chennai, Kolkata, with respect to the starting point?
Delhi, Bangalore and Hyderabad by (A) North-East
different modes of transport of Bus, (B) North
Train, Aeroplane, Car and Boat from
Mumbai. (C) South-East
ii. The person who travelled to Delhi did (D) North-West
not travel by boat.
iii. R went to Bangalore by car and Q went 27. If in the word DISTURBANCE, the first
to Kolkata by aeroplane. letter is interchanged with the last letter,
iv. S travelled by boat whereas T travelled the second letter is interchanged with
by train.
the tenth letter and so on, which letter
v. Mumbai is not connected by bus to
Delhi and Chennai. would Come after 'T' in the newly formed
Then, which of the following eombnatlons word?
of person and mode is not correct? (A) I
(A) P-Bus
(B) Q-Aeroplane (B) N
(C) R-Car (C) S
(D) T-Aeroplane (D) U
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28. Three persons A, Band C are standing
32. If Thursday was the day after the day .
in a queue. There are five persons
between A and B and eight persons before yesterday five days ago, what
between Band C. If there are three
is the least number of days ago when
persons ahead of C and 21 behind
A, then what could be the minimum Sunday was three days before the day
number of persons in the queue? after tomorrow?
(A) 27
(B) 28 (A) Two (B) Three
(C) 40 (C) Four (0) Five
(0) 41
29. Two clocks are set correctly at 9 a.m. 33. If a meaningful word beginning with B
on Monday. Both the clocks gain 3 min. can be formed from HACEB, then the
and 5 min. respectively in an hour. What
time will the second clock register, if the fourth letter of that word is
first clock which gains 3 min. in an hour (A) A
shows the time as 27 min. past 6 p.m.
on the same day? (B) C
(A) 6:27 p.m. (B) 6:45 p.m. (C) E
(C) 6:25 p.m. (0) 6:50 p.m.
(0) None of these
30. If 1st October is Sunday, then 1st November
will be
(A) Monday (B) Tuesday 34. In a garden, there are 10 rows and
(C) Wednesday (0) Thursday
12 columns of mango trees. The
31. Statements: All players are doctors.
distance between the two trees is
Some doctors are
actors. 2 meters and a distance of one meter is
Conclusions: I. Some doctors are
left from all sides of the boundary of the
players as well as
actors. garden. The length of the garden is
II. All actorsare doctors. (A) 20 m
(A) Only Conclusion I follows
(B) 22 m
(B) Only Conclusion" follows
(C) Either I or II follows (C) 24 m
(0) Neither I nor II follows
(0) 26 m
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ss. Five girls are sitting in a row. Kalpitha 38. Arun said, "This girl is the wife of the .
is to the left of Mridula. Megha is to the
grandson of my mother". Who is Arun to
right of Arpana. Sangeetha is in the
the girl ?
middle of Megha and Kalpitha. Who
among the following is to the extreme (A) Father
right of the row ? (B) Grandfather
(A) Mridula (C) Husband
(B) Arpana (0) Father-in-law
(C) Kalpitha
(0) Sangeetha 39. Study the following information carefully
36. Mahu goes 40 km North, turns right and to answer the question.
i.
goes 80 km, turns right again and goes Eight friends A, B, C, 0, E, F, G and
30 km. In the end, he turns right again H are seated in a circle facing the
and goes 80 km. How far is he from his centre.
starting point if he goes straight ahead ii.
o is between Band G and F is
another 50 km and turns left to go his
between A and H.
last 10 km ?
iii. E is second to the right of A.
(A) 30km
(B) 35km Then, which of the following is A's
(C) 40km position?
(0) 50km (A) Left of F
37. (B) . Right of F
In a family, there are six members A, B,
C, 0, E and F. A and B are a married (C) Between E and F
couple, A being the male member. 0 is (0) Cannot be determine
the only son of C, who is the brother of A.
E is the sister of O. B is the daughter- .40. 'Pen' is related to 'Pencil' in the same way
in-law of F, whose husband has died. as 'Hockey' is related to
Then who is C to B ?
(A) Football
(A) Brother
(B) Brother-in-law (B) Ground
(C) Nephew (C) Team
(0) Son-in-law (0) Players
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iii) Arithmetical and Numerical Ability
,
41. If x [~] + y [~] + [--1~] = 0, then (x, y) = [0 0 3]
46. If A = 0 3 0 then matrix A is
(A) (2, 1) (8) (1, 2) ,3 0 0
(C) (-1, 2) (0) (2,-1) (A) scalar matrix
42. If la x612 + 1a-·612 = 144 and (8) diagonal matrix
(C) , unit matrix
1 a 1= 4, then 161=
(0) square matrix
(A) 13 (8) 9
(C) ± 3 (0)3
cOSU Sinu]
47. If A= [ andA'=A-1
43. The maximum value of the determinant -sinu COSU
then u=
111
(A) 1
1 1+ sine 1
= (8) 0
1 1 1+ coss
(C) ~
(A) 1 (8) 1
2 (0) any real number
(C) 2 (0) None of these
48. If T is the set of all triangles in the
44. If A, 8 are square matrices of same
Euclidean plane and let R be a relation
order and 8 is skew symmetric, then on T defined as
A'8A is R = {(a, b)/a, bET, a is congruent to b},
then R is
(A) Symmetric matrix
(A) reflexive but not transitive
(8) Skew symmetric
(8) transitive but not symmetric
(C) Neither symmetric nor skew (C) equivalence
symmetric (0) none of these
(0) Null matrix
45. If x3'f = (x + y)9, then dy =
dx
49. !.J1;;! -
1 xdx
(A) Yx (8) X ./2-1 t:
(A) 2 (8) ..;2-1
(C) -Yx (0) -X (C) tan- 2 -
1
% (0) none of these
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50. Value of tan:' (Sin( -%)) = 56. The domain of the tunction
f()x = X2 + 2x'+ 1 .IS
(A) % (B) -X x2 -x-6
(C) -% (0) -% (A) R - {3, 2} (B) R - {- 3, 2}
a dx IT (C) R - {3, - 2} (0) R - (3, - 2)
51. f
If 0 1 + 4x2 :::: 8 ' then a =
1 57. Let f : R ~ R be a real function defined
(A) 1 (B) 2
by f(x) = x3 + 5, then f-1 (x) =
1
(C) 2 (0) 0
(A) ( x + 5)Ys (B) ( x - 5)~
IT
52. If sirr:' x + sirr ' y = "2' then the value of
(C) (5-x)~ (0) 5 - x
cos' x + cos- 1 y =
IT
(A) 2 (B) 7t
58. The intercept made by the plane
2IT 2x - 3y + 5z + 4 = 0 on the x axis is
(C) 0 (0) 3
(A) - 2 (B) %
Th e generai ...SOlution 0 f ydx - xdy ::::0" IS
53 .
y
(C) -Ys (0) 2
(A) xy c = (B) x = cy2
(C) y = cx (0) Y = cx2 59. A bag contains 5 red and 3 blue balls.
54. The identity element for the binary If 3 balls are drawn at random without
operation * defined on Q - {OJ as
replacement, the probability of getting
a * b = a b for all a, b E Q - {OJ is exactly one red ball is
2
(A) 1 (B) 0 45 135
(A) 196 (B) 392
(C) 2 (0) .!
2
(C) 15 (0) 15
55. Let A = {1, 2, 3} and R is a relation 56 29
defined on A as R = {(1, 1), (2, 2),
(3, 3), (1, 2), (2, 3), (1, 3)}, then R is 60. If n(A) = m, n(B) = n, then the total number
(A) Reflexive but not symmetric of non-empty relations from set A to
(B) Reflexive but not transitive set B is
(C) Symmetric and transitive (A) m''
(0) Neither symmetric nor transitive (C) mn-1
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v) English Language and Comprehension
~~am~
Complete the sentence with correct option :
86. Ann didn't see me wave to her. She
81. He enquired that -- __ in the other direction.
(A) what is my name (A) look
(B) what my name is
(B) looks
(C) what was my name
(C) was looking
(0) what my name was
(0) had looked
82. Book early lest
(A) you miss this chance 87. I asked the driver to slow down. She
(B) you don't miss this chance __ too fast.
(C) you shouldn't miss the chance (A) drives
(0) you won't miss the chance (B) was driving
Choose the correct one word substitution for (C) used to drive
the following: (0) were driving
83. "One who knows everything". 88. The Chinese printing.
(A) ostracize
(A) invented
(B) omniscient
(B) have invented
(C) omnipotent
(0) omnipresent (C) had invented
(0) invent
84. "That which can't be defeated".
(A) inexplicable Fill in the blanks with suitable idiomatic phrase:
(B) invincible
89. The High Court has the
(C) incomparable
order passed by the Trial Court.
(0) incredible
(A) set aside (B) set up
Complete the sentences using correct form of
(C) set down (0) set in
the verb from the given options:
90. There can be no rule for
85. Linda has lost her passport again, it's
trust.
the second time this to her.
(A) has happened (A) null and void
(B) happens (B) hard and fast
(C) happened (C) by and large
(0) none of the above (0) to and fro
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Select correc preposition to fill in the blanks:
96. Many were killed in the accident.
91. ----_ a pencil she wants a (A) Noun
paper. (B) Adiective
(A) Beside (C) Indefinite pronoun
(B) Besides (0) Adverb
(C) F6r 97. Consequently he refused to go.
(0) Of (A) Adverb
92. We stayed Preetam Nagar. (B) Pronoun
(A) in (C) Noun
(B) on (0) Adjective
(C) at Fill in the blanks with correct word from the
(0) through given options:
93. She will arrive there 98. The State of Rajasthan has _
4 O'clock. in western region.
(A) dessert
(A) by
(B) dessart
(B) on
(C) desert
(C) still
(0) desart
(0) till
99. An friend is always a
94. She lives the Circuit House. conceited person.
(A) on (A) egotist
(B) up (B) egoist
(C) below (C) ego
(0) at (0) none of the above
Select the sentence which is grammatically
Select correct option for the underlined words correct from the following:
in the following sentences:
100. (A) He looks as if he was ill.
95. It looks as though it might rain. (B) He was very kind if rather vain.
(A) Noun (C) He won both a medal and a
(B) Verb scholarship.
(C) Conjunction (0) This boy has either stolen my purse
(0) Interjunction or that girl.
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SECTION - 8
Post Specific Subject - Related Ouestlons
101. Extinguishing of Class A category fires 108. Bending of every alternate tooth of a
is achieved by saw to the opposite direction is called
(A) Freezing (B) Cooling (A) Topping (B) Sharpening
(C) Starving (D) Smothering (C) Reshaping (D) Setting
102. Hammer used for general work in 109. Which one of the following is false
machine fitting shop is with respect to an auto-transformer
(A) Ball-peen (B) Straight-peen when compared with a two winding
(C) Cross-peen (D) Flat-peen transformer of the same capacity?
103. Which one of the following is not a (A) Have better voltage regulation
non-conventional source of generating (B) Smaller in size
electrical energy? (C) High cost
(A) Wind (B) Geothermal (D) Efficient
(C) Hydro (D) Solar 110. The setting of the saw teeth that helps
104. The test carried out to check the for free cutting and provides for good
continuity of cables in an individual sub chip clearance is
circuit of an installation is (A) Wave set
(A) Open circuit test (B) Alternate set I.
(B) Polarity test (C) Coarse set
(C) Earth and ground test (D) Staggered set
(D) Insulation and leakage test
111. The part of a metalworking file labelled
105. Mandatory safety sign is characterized as 'heel'is .
by its (A) End of the file opposite to tang
(A) Triangle shape, black symbol on (B) Broadpart of file with teeth cut on it
yellow background (C) Broadpart of file withoutteeth on it
(B) Square shape, white symbol on (D) Thin part of the file with simple row
green background of parallel teeth
(C) Circular shape, black symbol on
white background 112. The tapered end of the blade of a chisel
(D) Circular shape, white symbol on is called
blue background (A) Tang (B) Shank
(C) Wedge (D) Cheek
106. The type of fire extinguishers suitable
for class B fires and best suited where 113. In a try squarethe blade must be at right
contamination by deposits must be angles to the
avoided is (A) Head (B) Jaw
(A) CO2 (B) Halon (C) Stock (D) Guide
(C) Dry powder (D) Foam 114. If the size of the circuit conductor in
107. The filesthat have deepercuttingaction, a domestic installation is 10 sq.mm
and are useful for filing soft materials copper, the size of earth continuity
like aluminium, tin and copper is aluminium conductor would be of
(A) Rasp cut (B) Curved cut (A) 2.5 sq.mm (B) 5 sq.mm
(C) Double cut (D) Single cut (C) 4 sq.mm (D) 6 sq.mm
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I11111111 11m I1111111111 1111111111111111119111111911111111111111111111111111111111111111 III
115. The type of resistor where a resistive
120. Consider four conductors carrying .
material is deposited uniformly on to a
high grade ceramic rod is currents 11, I~, 13 and 14 and meeting
(A) Carbon composition resistor at point 0 as shown in Figure below.
(8) Film resistor .
Applying Kirchhoff's current law to the
(C) Wire wound resistor
(D) Cermet resistors junction 0, we have,
116. Out of the following, the material having
negative temperature co-efficient of
resistance is
(A) Manganin (8) Aluminium
(C) Mica (D) Constantan
117. If the voltage across the 5000 resistor
is 2.5V , the value of the unknown
resistance "R" in the below given (A) 11 + 12 = 14 + '3
figure is (8) 11 + 13 = '2 + '4
550
(C) 12 + 13 + '4= 11
50
(D) 11 + '4 = '2 + '3
121. As per Faraday's second law of
12V R 500
electrolysis, The mass of an element
deposited or liberated during electrolysis
is directly proportional to the chemical
-B equivalent weight of that element. Here
the chemical equivalent weight of that
(A) 2330 (8) 2060 element is its
(C) 2540 (D) 1960
(A) Valency/atomic weight
118. Which of the following statement does (8) Equivalent weight/atomic weight
not hold good for laws of resistance? (C) Atomic weight/valency
The resistance of a conductor (D) Equivalent weight/valency
(A) Is directly proportional to its length 122. The capacity of lead acid cell is taken
(8) Depends upon temperature
up to a point till it discharges to
(C) Depends upon the nature of
material (A) 1.2V (8) 1.6V
(C) 1.8V (D) 2.0V
(D) Is directly proportional to its area
of cross section 123. The battery which is ugged in
119. Three equal resistors of RO are construction and has a very long active
connected as shown in below figure. life and can be stored indefinitely in
The equivalent resistance between either a discharged or charged state
points A and 8 is without suffering any ill effects is
(A) Lead acid (8) Nickel-cadmium
(C) Nickel-iron (D) Lithium
124. 'f the current rating of a fuse cartridge
~
is 10 Ampere, the colour rarked on it
for identification will be
(A) 3/R (8) 1/3R
(A) White (8) Green
(C) R/3 (D) 3R
(C) Grey (0) Red
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MKG-XXllrrECHCIW/1T/03
I 11111111 11m III 111.111 1IIIm111m 111111110 1111111111111111111110 1111111111111 m1111111111111
125. An alloy having 40% nickel and 60% 133. In a pipe earthing method, the
copper used as standard resistances
in some costly instruments is diameter of tre galvanized iron pipe
(A) Eureka or electrode is
(B) German silver
(C) Manganin (D) Nichrome (A) 36mm (B) 38mm
126. (C) 35mm (D) 42mm
The advantage of stranding of cables is
(A) Lower current carrying capacity 134. The resistance of earth electrode for a
(B) Lower heat radiating and conducting small substation is
surface
(A) 0.50 (B) 1.00
(C) Facilitates making of joints
(D) Decrease the flexibility of cable (C) 2.00 (D) 4.00
127. The type of cable used at damp places 135. The size of earth continuity copper
and for short distance service lines is conductor in S.W.G. for a 100KVA
(A) Lead covered installation will be equal to
(B) Armoured
(A) 3 (B) 5
(C) PVC
(D) Cab tyre sheathed (C) 6 (D) 8
128. 136. A room 12m x 15m has 15 lamps of
The solder having 50% Tin and 50%
Lead as its composition is 200 watt each. If the luminous efficiency
(A) Fine solder (B) Soft solder of each lamp is 12 lumens / watt and
(C) Cheap solder (D) Hard solder the coefficient of utilisation is 0.4 , the
129. The safest flux for electrical jobs such illumination of the room is
as soldering on a commutator is (A) 60lux (B) . 80lux
(A) Tallow (B) Fluxite (C) 100lux (D) 120lux
(C) Zinc chloride (D) Resin
137. Three coils, each having a resistance
130. For wires having a number of strands,
the joint made is of 200 and an inductive reactance of
(A) Twisted joint (B) Pigtail joint 150, are connected in star to a 400V,
(C) Married joint (D) Tap joint 3-phase, 50 Hz supply as shown below.
131. The height of fan and light points The lin:, current R I, is A I
from the ground level in a domestic
installation should be
(A) 3.25 m and 3.0 m
(B) 2.75 m and 2.5 m
VPII
(C) 2.5 m and 2.5 m
(D) 1.5 m and 1.0 m
Vl", 400V
-1
132. The cheapest method of running wires
II
and used for temporary lighting at dry
B 150 Y
places is
(A) Cleat wiring
II
(B) Lead sheathed wiring
(C) Cab tyre sheathed wiring (A) 10.75 A (B) 8.65A
(D) Conduit pipe wiring (C) 9.24 A (D) 7.98A
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Text of page 26
MKG-XXllfTECHCIW/l T/03
I11111111 11m I11111 mllllll~lllll~111111 mllllllllm~11111111111111111111111111111111111111 mil
138. In a balanced delta connectedthree phase 143. The configuration for operating a .
system, the line currents are behind the transistor in which, emitter current IEis
respective phase currents by the input current and colleotor current
(A) 30° (8) 60° Ie is the output current is
(C) 90° (0) 120° (A) Common-emitter
(8) Common-ground
139. A diode that uses a metal semiconductor (C) Common-base
contact rather than a P-N junction is (0) Common-collector
(A) Varactor diode 144. The starting torque of a three phase
(8) Zener diode induction motor is maximuT when
(C) Schottky diode (A) Rotor resistance equals stator
(0) Light emitting diode reactance
(8) Rotor resistance e4uals rotor
140. When the negative terminal of the reactance
battery is connected to the P-type (C) Stator resistance equals rotor
material and the positive terminal to the reactance
N-type material, the diode is said to be (0) Stator resistance equals stator
reactance
(A) Unbiased
145. Which of the following statement is
(8) Low biased
(C) Forward biased false regarding skewing of rotor bars in
a squirrel cage induction motor?
(0) Reverse biased
(A) Prevents locking tendency of
141. rotor
The base region of a P-N-P transistor is
(8) It increases starting torque
(A) Very thin and heavily doped with
(C) Increased slip for a given torque
holes
(0) Reduces motor humming sound
(8) Very thin and heavily doped with during operation
electrons
146. In a three phase induction motor, when
(C) Very thin and lightly doped with the rotor starts rotating, the frequency
holes of rotor currents is
(0) Very thin and lightly doped with (A) Slip times supply frequency
electrons (8) Supply frequency/slip
(C) 1/Slip times supply frequency
142. For an N-P-N transistor, if IB' Ie' IEare (0) Equal to supply frequency
the respective base current, collector 147. The main purpose of performing
current and emitter current , the dynamic open circuit test on a transformer is to
value of common emitter current gain is measure its
given as (A) Copper loss
(A) AIB / Ale (8) Core loss
(8) AlE / AIB
(C) Total loss
(C) Ale / AIB (0) Ale / AlE
(0) Insulation resistance
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Text of page 28
MKG,;,XXIlITECHCIW/1 T/03
IIIIIIIIIII~IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII11101111111111111111 UIIIIIIIIII
148. A single phase transformer has 400 153.
For DC generators, lap winding is a -
primary and 1000 secondary turns. The
suitable option for
net cross sectional area of the core is
60 ern". If the primary is connected to (A) High current, low voltage
a 50Hz supply at 500V, then the peak (B) Low current, low voltage
value of the flux density in the core is (C) High current, high voltage
(A) 0.654 Wb/m2 (B) 0.756 Wb/m2_ (D) Low current, high voltage
(C) 0.832 Wb/m2 (D) 0.938 Wb/m2 154. The sole purpose of commutator In a
I .
149. A 10 Volt zener diode is connected in DC generator is to
a circuit as shown below. The value of (A) Increase output voltage
Eo , when EIn = 20 Volt is (B) Reduce sparking at the brushes
10V (C) Provide smoother output
(D) Convert induced AC into DC
155. The critical resistance of a DC generator
is the resistance of
(A) Field (B) Armature
(C) Load (D) Brush
100 n ..' 156.
In a DC generator, the generated E.M.F.
is directly Proportional to the
(A) Field. current
(A) 20V (B) 15V (B) Number of armature parallel paths
(C) 10V (D) 5V (C) Pole flux
150. The ability of a Silicon Controlled (D) Number of dummy coils
Rectifiers or SCRs to remain ON 157.
A shunt generator supplies a 20KW load
even when gate cu rrent is removed
is referred to as at 200V through cables of resistance,
(A) Holding (B) Latching R= 1OOmn. Ifthe field winding resistance,
(C) Triggering (D) Drop out Rf = 50n and the armaturd resistance,
151. In a DC machine, the number of times Ra =40mn, the E.M.F. generated in the
a wave winding must at least go around armature is
the armature before it closes back (A) 310.17 Volts (B) 21f.17 Volts
where it started is (C) 204.45 Volts (D) 196.38 Volts
(A) Once (B) Twice 158.
(C) Thrice (D) Four times One of the characteristics of a single
phase induction motor is that it
152. The DC armature winding in which coil
(A) Is self starting
pitch are a pole pitch apart is called
(A) Multi pitch (B) Fractional pitch (B) Requires only one winding
(C) Can rotate in only one direction
(C) Full pitch (D) Short pitch
(D) Is not self starting
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Text of page 30
I
MKG-XXIlITECHCIW/l T/03
11"1111 11111111 IIIIIIII.I~U III. 11111111111111111111 111111111111111111 1111111111111111111 1111
159. The capacitor in a capacitor start and 164. The stator of a 3-phase, 4-pole induction .
run single phase induction motor is
motor is connected to a 50 tiz supply.
connected in series with
The rotor runs at 1455 RPM at full load.
(A) Starting winding
The slip at full load will be
(8) Running winding
(A) 1% (8) 2%
«(1) Squirrel cage winding
(C) 3% (D) 4%
(9) Compensating winding
165. A unijunction transistor has
160. Under operating conditions, if the current
(A) Anode, cathode and a gate
dtawn by the motor is more than 130%
(8) .Two bases and one emitter
01 the full load current, the overload
release in the three point starter attracts (C) Two anodes and one gate
an armature which short circuits the (D) Anode, cathode and two gates
(A) Overload release coil 166. The conductors which connect the
(8) No current coil sub-station to the distributors serving
(C) No volt coil a certain allotted area is
(D) Overcurrent release coil (A) Feeders
161. The primary reason for providing (8) Radial distributor
compensating winding in a DC generqtor (C) Service mains
is to (D) Supply mains
(A) Compensate for decrease in main 167. The main disadvantage of using short
flux
pitched winding in the alternator is that
(8) Neutralize armature M.M.F. it
(C) Neutralize cross magnetising flux
(A) Reduces harmonics in the generated
(D) Maintain uniform flux distribution voltage
162. In an alternator, the pitch factor for a (8) Produces asymmetry in the three
winding having 36 stator slots, 4 poles phase winding
with a coil span of 1 to 8 is (C) Reduces the total voltage around
(A) Cos(20) (8) Cos (40) the armature coils
(C) Cos (60) (D) Cos (30) (D) Increases copper of e d
/
163. The phenomena of hunting or momentary connections
speed fluctuations in an alternator is 168. Zero power factor method of an
overcome by employing a alternator is used to find its
(A) Damper winding
(A) Synchronous impedance
(8) Cylindrical winding (8) Efficiency
(C) Compensating winding
(C) Armature resistance
(D) Concentric winding (D) Voltage regulation
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Text of page 32
I
MKG-XXIlITECHCIW/1T/03
IIIIIIIIIII~IIIIIII gill glllllllllllllllill 11111 01111111IIIBIII 1111111111111
II 111111111111
169. Synchronisation of altemators for proper 175.
As per Indian Electricity Rule, the .
parallel operation is done with a device
called leakage current in an installation should
not exceed
(A) Stroboscope
(8) Synchronoscope (A) 1/1000th part of full load current of
(C) Oscilloscope the installation
(D) Paralleloscope (8) 1/5000th part of full load urrent of
the installation
170. As the load is increased, the speed of (C) 111OOOOth part of full loa cu rrent of
a DC shunt motor
the installation
(A) Increases Proportionately
(D) ·1I15000th part of full load current of
(8) Remains constant
the installation
(C) Increases slightly
(0) Reduces slightly 176. Lamp Circuits employe9 to either
I
provide dim lights or brig~t lights as
171. In galvanised iron wires, the metal
required in hospitals, hotels, railway
that is coated on to the iron to prevent
carriages etc. are
corrosion is
(A) Simple circuits
(A) Tin (8) Lead
(8) Pilot circuits
(C) Zinc (D) Cadmium
(C) Series-parallel circuits
172. When load is removed, the DC motor (D) Master switch circuits
that will run at the highest speed ~ill 177.
be Metallic sheath is used in t~e cable to
(A) Series (A) Provide strength to the cable
(B) Cumulative compound (8) Provide proper insulation
(C) Shunt (C) Avoid the chances of rust on the
(D) Differential compound strands
(D) Prevent moisture entry into the
173. A 25KVA Single phase transformer
cable
has 250 primary and 40 secondary
turns. If the primary is connected to a 178. Glass insulators employed in transmission
50Hz supply at 1500V, the secondary and distribution have Simpler design and
currents on full load is even one piece design can e used due
(A) 75.6A (8) 104.2A to
(C) 110.4A (D) 125.6A (A) Low coefficient of the mal
174. A Six-pole lap-wound DC motor is expansion
connected to a 250V d.c. supply. The (8) Higher compressive strength
armature has 500 conductors and a (C) Higher dielectric stre gth
resistance of 1Q. The flux per pole (D) High resistivity
is 20mWb. If the armature current is 179. To take diversion from the main line
40A, then the speed in revolutions per either to drop to switch points or to the
minutes will be ' light points, we employ
(A) 1175 (8) 1380 (A) Elbows (8) Couplers
(C) 1260 (D) 1565 (C) Bends (0) Tees
-32-
Text of page 34
I
MKG-XXIlITECHCIW/1T/03
111111111111111111111111111111111111111111111111/1 1111111111IIImii /111111m 111111111I1II
180. If E and V are the open circuit voltage 186.
and terminal voltage respectively for an
Which of the following is false with .
respect to a neon sign lamp?
alternator, its percentage regulation is
given by (A) Electrode is of spiral fo m
(A) [(V - E)N] x 100 (B) Two ends of the tube are fitted with
(B) [(E - V)/E] x 100 electrode
(C) [(E - V)N] x 100 (C) We can set any design or shape
(D) [(V - E)/E] x 100 (D) The tubes are to be matched with
high voltage transformer
181. The specific gravity of an electrolyte in
a secondary cell is measured with a 187. For a britannia joint, the overl p distance
(A) Hygrometer (B) Hydrometer for a 8 S.W.G conductor having an
(C) Pyrometer (D) Hypometer approximate diameter of 4mm will be
182. If a current transformer of 100A/5A about
is connected to an energy meter, the (A) 20-40mm (B) 40-60mm
multiplying factor for the recorded (C) 80-100mm (D) 100-120mm
energy is
188. The switch which is normally a two
(A) 20 (B) 5
(C) 100 (0) 50 terminal device functioning as a one way
183. MAT type high pressure mercury vapour switch to make or break a oircuit is
(A) Intermediate switch
lamp is a
(B) Bell push switch
(A) Lamp with auxiliary electrode
(B) Lamp with quartz discharge tube (C) Double pole switch
(C) Lamp with tungsten filament (0) Ceiling switch
(D) Lamp with auxiliary electrode and 189. As per Bureau of Indian Standards
bayonet cap
1293-1988, from the year 1991, the
184. The direction of which of the following electrical wiring accessories rating shall
single phase induction motor cannot be
be changed as they are fixed by the (A) 240V and 5 or 15A
position of copper rings?
(B) 240V and 6 or 16A
(A) Reluctance motor
(C) 250V and 5 or 15A
(B) Shaded pole motor
(C) Repulsion motor (D) 250V and 6 or 16A I.
(0) Hysteresis motor 190. The semiconductor devioe that can
185. The starting torque of a capacitor start be triggered by anyone of its three
induction run motor is directly related terminals is
I
to the angle 'a' between its winding (A) Silicon controlled recffier
currents by the relation
(B) Unijunction transistor
(A) cos a (B) sin a
(C) Field effect transistor
(C) tan a (D) sin (a/2)
(0) Bipolar junction transi tor
-34-
Text of page 36
I
MKG-XXllfTECHCIW/1T/03
I 1111111 11m 11111111111111111111111111111111111 11m 1111/1111 111111111111111111111/111111 RI/
191. The brushes employed in D.C machines 196. If a secondary cell or battery has not .
characterized by high hardness, high
been used fo,r a long period, then the
mechanical strength and long life is
(A) Graphite battery should be put on a
(B) Electro graphite (A) Trickle charge
(C) Metal graphite (B) Boost charge
(D) Carbon and carbon graphite (C) Freshning charge
192. (D) Initial charge
In the field diverter method of speed
control of DC series motor, the speed 197. The type of cumulative co~pound DC
obtained will be
generator used for electroqlating and
(A) Above the normal speed only lighting purpose is
(B) Below the normal speed only
(A) Over compounded
(C) From zero to full normal speed
(B) Level compounded
(D) Two speeds - one above.and one
below the normal speed (C) Under compounded
(D) Flat compounded
193. A transformer with a rating of 10 KVA,
2200/220V, 50Hz was tested with the 198. In a three phase system, tre order in
following results: which the phases reach their maximum
Short circuit test power input = 340 W, positive value is called
open circuit test power input = 168 W. (A) Phase difference
If the load power factor is 0.8, the (B) Phase sequence
efficiency of this transformer at full load (C) Phase shift
will be
(A) 96% (D) Phase displacement
(B) 94%
(C) 92% (D) 98% 199. Smooth cylindrical type alt rnators
194. In an AC three phase, four wire could be identified by thei r I
system, the distribution of the load (A) Shorter diameter and shorter
should be indicated by red, yellow and axial length
blue colour and the neutral with (B) Longer diameter and horter axial
(A) Green (B) Green-yellow length
(C) Black (D) Grey (C) Shorter diameter and onger axial
195. Assuming negligible voltage drop, a length
power factor of 0.8 and 230 Volt supply, (D) Longer diameter and longer axial
the size of the aluminium conductor for length
power and lighting circuit from meter 200.
to main distribution board having three The Bipolar Junction Transistor
light and fan circuits of 800 Watt each Operation Region corresponding to
and two 15A power ci rcuits of 1500 Watt forward-bias for both base-emitter and
each will be base-collector junctions is
(A) 10 mm2 (B) 16 mm2 (A) Saturation (B) Active
(C) 25 mm2 (D) 35 mm2 (C) Cut-off (D) Inactive
-36-
Text of page 38
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MKG-XXIlITECHCIW/1 T/03
1.111111 11M 11111111111111111111111111111111111111111111111111111111111111111m 1111111111111
SPACE FOR ROUGH WORK
~cnr<f~~~~
-38-
Text of page 39
1111111111_111111111.11111111111111111111111111111111111111111111111111111111111111
MKG-XXIIITECHCIW/1T/03
SPACE FOR ROUGH WORK
~~cli~~2lR
-39-
Text of page 40
M KG- XXIlITE CH CIW 11T103 1 nllllllilm111111 nllllill 1111111111II 111111lUIIIIIIIUII 1I1111\1111IU1 11111 1111nil
IMPORTANT INSTRUCTIONS TO CANDIDATES
3un~cU'O~ ~ q~~t{?i ~
13. This booklet contains 40 pages. 13. W ~ -q 40 ~ ~1
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statement is followed by four alternative
14. f.$t : ~
~~
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~~~~~~
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suggested answers or completions. In each
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correctly answers the question or completes the ~ ~ ~ c6t WI ~ 3fu ~ "3"fR~ ~
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Source: Delhi Subordinate Services Selection Board. Question paper published by Delhi Subordinate Services Selection Board.