DSSSB 2019: 21 July, Craft Instructor Electrician
Text of page 1
MKG-XIXlTECHCIE/1 T/02
Write here Roll Number and Answer Sheet No.
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Time Allowed: 2 hours OBJECTIVE TYPE TIER-ONE EXAMINATION Maximum Marks: 200 1:0 wI-
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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. ~ ~ if ¥f 200 w.:r t ~ f.I'"'i~Rsi1mTT ~ t : ItJ
following Sections: mTT -.:rtTal'1T~ ~ ifit B-&rr "9."60 SflI1iq:; I'
No. of Page
Sections Test Components (31) i) ~ ~ 20 2-5 ':[
Questions No.
(A) i) General Awareness 20 2-5 Ii) ~~(lm (~ ~
iI) General Intelligence and (111'tl'tl 'l1''l(11 20 6-11 I'
Reasoning Ability 20 6-11 iii) ~~~~ 20 12-15 1£
iii) Arithmetical and Numerical Ability 20 12-15
iv) Hindi Language and Comprehension 20 16-17 Iv) fR't ~ 3fR <i\q 20 16-17 It It"
v) English Language and Comprehension 20 18-19 v) ~ ~ 3fR <i\q 20 18-19 ~ W
(B) Post Specific Subject-Related (af) ~~fcrl<I-tioitftw.l 100 20-37
Questions 100 20-37
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11. The manner in which different questions are to be answered has 11. ~ ~ ~ "3n\ ~ ifit fcrlQ ~ ~ ~ tfu} Wt ~ f.'Rm
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. ~\Ili<nt<i~~ct>TlR'i'~~t I II;
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Go through instructions given in Page No. 40 (Back Cover Page)
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Text of page 2
M KG-XIXlTECHCI El1 T102
SECTION-A
i) General Awareness
1. Choose the correct pair of Cyclones 5. Which of the following statements true
(List - I) and its Affected areas (List - II). about ozone layer?
List _ I List _ II (A) Ozone is a triatomic molecule of
carbondioxide (C02)
a) Cyclone Titli - Odhisha Coast (B) The ozone layer absorbs all the
b) Bomb Cyclone - Gujarath Coast harmful UV-B radiations emanating
Choose the correct option given below. from the sun
(C) Both the option A and B are correct
(A) both a and b (D) None of the above
(B) b only
6. India is having common border with which
(C) a only
of the following nation/s ?
(D) none of the above (A) Afghan, Pakistan, China, Bhutan,
Sri Lanka, Myanmar
2. "Sahyog HOP TAC - 2018" a joint
(B) Afghan, Pakistan, Bhutan, Nepal,
exercises of coast guard held between
Sri Lanka, China
(A) India and Vietnam (C) Afghan, Pakistan, China, Bhutan,
(B) India and Sri Lanka Nepal, Myanmar
(C) India and Australia (D) None of the above
(D) None of the above 7. Which of the following major river
passes through Capital Delhi?
3. "Cyclone Vayu" recently in news, in
(A) Yamuna (B) Kosi
which of the following region it was
(C) Godavari (D) Luni
originated?
8. The song Jana-Gana-Mana was
(A) Arabian Sea
composed originally in Bengali by
(B) Pacific Ocean Rabindranath Tagore was adopted in
(C) Bay of Bengal which of the following version by the
(D) None of the above constituent assembly as the National
Anthem?
4. Stockholm convention is a global treaty to (A) Hindi (B) English
protect human health and the environment (C) Bengali (D) Tamil
from which of the following pollutants? 9. What is the ratio of the length to the
(A) Carbon monoxide and height of the Indian flag?
Carbon dioxide (A) 3: 2
(B) PersistentOrganic Pollutants(POPs) (B) 2: 3
(C) 1: 2
(C) Methane and Sulphuric Acid
(D) None of the above
(D) None of the above
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MKG-XIXlTECHCIEl1T/02
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10. Which of the following animal notified as 15. Where does the headquarters (HQ) of
the national aquatic animal of India? the WTO located ?
(A) Geneva, Switzerland
(A) Gharials of Chambal (8) Rome, Italy
(8) Gangetic river dolphin (C) Hague, Netherland
(0) None of the above
(C) Ougong of Arabian Sea
(0) None of the above 16. Seva 8hoj Yojana is a Central Sector
Scheme of the which Ministry of
11. Which of the following Article deals with Government of India?
the fundamental rights of the Indian (A) Ministry of Culture
Constitution ? (8) Ministry of Civil Aviation
(C) Ministry of Food Processing
(A) Article 12 to 35
(0) None of the above
(8) Article 1 to 8
(C) Article 48 to 58 17. "World Investment Report" is released
by
(0) None of the above
(A) UNCTAO
12. Council of Ministers are appointed by (8) IMF
(A) President of India (C) UNO
(0) WTO
(8) Prime Minister of India
(C) Lok Sabha Speaker 18. Every year National Voters Oayobserved
(0) Finance Minister on
(A) March,21st
13. Oaching Ham National Park is located (8) January, 25th
in which of the following State? (C) June , 25th
(A) Jammu and Kashmir (0) None of the above
(8) Odisha 19. "Earth day" 2019 is observed with the
(C) Uttarakhand theme "Protect our species". Earth day
is celebrated every year on
(0) Kerala
(A) April, 22nd
14. Nobel Prize - 2018 for medicine was (8) March , 21 st
awarded to James P. Allison and (C) June, 5th
(0) None of the above
Tasaku Honjo for their discovery of
(A) Molecular mechanisms controlling 20. A bilateral naval exercise "Indra Navy -18"
the circadian rhythm was held between which of the following
countries?
(8) Cancer therapy by inhibition of
(A) India and Russia
negative immune regulation (8) India and Myanmar
(C) Mechanisms for autophagy (C) India and South Africa
(0) None of the above (0) None of the above
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MKG-XIXfTECHCIEl1 T/02
ii) General Intelligence and Reasoning Ability
21. Which one of the given interchanges in 24. Blueberriescost more than strawberries.
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MKG-XIXfTECHCIEl1 T/02
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27. The ratio between the speeds of two 30. If DELHI is coded as CCIDD, how would
trains is 7 : 8. If the second train runs you encode BOMBAY?
(A) AJMTVI
400 kms in 5 hours, the speed of the
(B) AMJXVS
first train is
(C) MJXVSU
(A) 10 km/hr
(D) WXYZAX
(B) 50 km/hr
(C) 70 km/hr
31. Find the missing number.
(D) none
7,26,63,124,215, ?,511
(A) 342
28. A is Z's son and B is Z's mother-in-law. (B) 343
N is B's husband and R's father. R is (C) 441
married to P (female). How is A related (D) 421
to N?
(A) Grandson 32. If GOLD is written as IQNF, how WIND
(B) Son can be written as code?
(C) Uncle (A) YKPF
(D) Aunty (B) VHCM
(C) XJOE
29. Four children are sitting in a row. A is (D) DNIW
occupying seat next to B but not next
33. A is B's brother. C is A's mother. 0 is
to C. If C is not sitting next to D. Who is
C's father, E is B's son. How is 0 related
occupying seat next to adjacent to 0 ?
to A?
(A) B
(A) Son
(B) BandA
(B) Grandson
(C) 0
(C) Grandfather
(D) A
(D) Great grandfather
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Text of page 10
•34. DIRECT: WRIVXG :: SOME:
(A) RPQS
MKG-XIXlTECHCIEl1 T/02
Direction for Q. No. 38 and 39.
There are 5 people each of whom like only
(8) HNLK one of 5 different brands of shirts.
5 people - A, 8, C, D and E
(C) HLNV
5 brands - Parx, Allen Solly, New Port,
(D) VNOP Arrow and Raymonds
They have following preferences.
35. Five boys A, 8, C, D and E are sitting 1) A does not like Allen Solly and
in a row. A is to the right of 8 and E is Raymonds.
to the left of 8 but to the right of C. A is 2) D prefers New Port or Allen Solly.
to the left of D. Who is second from the 3) C prefers Parx.
left end? 4) 8 does not prefer Arrow, New Port and
Raymonds.
(A) D
(8) A
38. Who prefers Raymonds ?
(C) E
(A) A
(D) 8 (8) E
(C) 8
36. 10,100,200,310,? (D) D
(A) 400
39. Who wears Arrow?
(8) 410
(A) A
(C) 420 (8) 8
(D) 430 (C) D
(D) E
37. Find odd number out.
40. If - means +, + means -, x means + and
52,51,48,43,34,27,16.
+ means x, then which of the following
(A) 27 equation is correct?
(8) 34 (A) 30 - 5 + 4 + 10 x 5 = 62
(8) 30 + 5 + 4 - 10 x 5 = 22
(C) 43
(C) 30 + 5 - 4 + 10 x 5 = 28
(D) 48
(D) 30 x 5 - 4 + 10 + 5 = 41
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Text of page 12
MKG-XIXlTECHCIEl1T/02
iii) Arithmetical and Numerical Ability
41. The sum of odd numbers between 0 and 46. If 20 men can do a job in 90 days, then
50 is the number of days required for 30 men
(A) 625 (8) 600 to do the same job is
(C)) ~25 (0) none of these (A) 135 days (8) 60 days
(C) 80 days (0) 75 days
42. The roots of the quadratic equation
2x2 - 212 x + 1 = 0 are 47. If the difference of 2 angles is 45° and
-.r1 -1 their sum is 90°, then the two angles
(A) - 12' 12 are
(A) 22°,6r
1 1
(8) 12' 12 (8) 22.! ° 67.! °
2' 2
(C) -1,-1
(C) 23°,68°
(0) 1, 1 (0) none of these
43. The greatest number that divide 132 and 48. The rate of simple interest (S.I.) at which
77 leaving remainder 2 in each case is the amount of Rs. 4,000 amounts to
Rs. 4,220 in a year is, (in %)
(A) 7 (8) 9
(A) 5.5%
(C) 5 (0) 8
(8) 6%
44. When a polynomial x4 - 5x + 6 is divided (C) 7.5%
by 2 - x2, the quotient is
(0) 12%
(A) x2 + 2
(8) -x2 + 2
49. The value of k, if 2/3 k 5 k are
(C) x2 - 2' /3' '8
(0) -(x2 + 2) 3 consecutive elements of A.P. (Arithmetic
Progression) is
17 64 6 22
45. Among the numbers - -- - - (A) 16 (8) 1%5
, 8' 455' 15' 7
one which has non-terminating, repeating
(C) 1%3 (0) none of these
decimal expansion is
(A) 22;4 50. If sin(A - 8) = ~, cos(A + 8) = ~ , 0°< A,
(8) 6%55 8 ~ 90°, A > 8 then A =
(A) 60°
(C) ~5 (8) 45°
(C) 75°
(0) 1%
(0) none of these
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Text of page 14
MKG-XIXlTECHCIEl1 T/02
R
51. A tangent PO at a point P of a circle of 55. If the selling price of an article is
radius 5 cm meets a line through the Rs. 3,680 and profit percent on the
centre 0 at a point 0 so that 00 = 12 cm. cost price is 15%, then the cost price
Length PO is of it is
(A) 12 cm
(A) Rs.3,200 (8) Rs.3,300
(8) 13cm
(C) 8.5 cm (C) Rs.3,000 (0) Rs.4,000
(0) .J119 cm (22f _2(3°)
56. Value of 2 is
52. A batsman finds that by scoring a (2°)6 _ 2(2 )
century in the 11th innings of his test 1
(A) 1 (8) --
matches, he has bettered his average 15
of previous 10 innings by 5 runs. His 1 1
(C) - (0) -
average after the 11th innings is 15 16
(A) 55 runs
57. If 2 cubes of volume 64 cm3 each are
(8) 45 runs
joined end to end. Then the surface area
(C) 50 runs of the resulting cuboid is
(0) none of these (A) 100 cm2 (8) 225 cm2
53. A chord of radius 15 cm subtends an (C) 216 cm2 (0) 160 cm2
angle of 600 at the centre. The area of x2 y2
the minor segment of the circle is (in 58. If x = a coss, y = bsine then 2+2 =
square units) a b
225rc 1 1
(A) -- (A) ab (8) -+-
'6 a b
1 1
225J3 (C) 1 (0) -+-
(8) a 2 b2
4
(C) 225(~ _F%) 59. If the distance between the points (3, -2)
and (-1, a) is 5 units, then the value of
(0) none of these a> 0 is
(A) 1 (8) -5
54. The average marks of 100 students was
40. It was found that a score of 53 was (C) 3 (0) 4
misread as 83. The corrected mean A father is 28 years older than his son.
60.
corresponding to the corrected score is After 5 years father's age will be 7 years
(A) 43.7 more than twice that of his son. The
(8) 41 present age of father is
(C) 39.7 (A) 40 yrs (8) 44 yrs
(0) 38.7
(C) 43 yrs (0) 45 yrs
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Text of page 18
MKG-XlxrrECHCIEIl T/02
v) English Language and ComprAhAnsion
~\lm3ffi~
Select wrongly spelt word. Fill in the blanks with appropriate article.
81. (A) Religious 86. book you want is out of
stock.
(8) Stance
(A) An
(C) Startle
"':":
(8) A
(0) Formedable
(C) The
82. (A) Tablau (0) Not needed
(8) Scion 87. Wisdom is gift of heaven.
(C) Zenith (A) a
(0) Stable (8) an
(C) the
(0) not needed
Fill in the blanks with appropriate preposition.
88. Copper is useful metal.
83. We arrived train.
(A) an
(A) by (8) a
(8) in (C) the
(C) on (0) not needed
. (0) through
Identify the tense used in the following
84. We stayed Mumbai for five sentences.
days.
89. He drink tea every morning.
(A) at
(A) present continuous
(8) on (8) present perfect
(C) for (C) simple present
(0) in (0) past tense
85. I acted according his advice. 90. I had written the letter before he
(A) for arrived.
(8) from (A) past tense
(8) present perfect tense
(C) to
(C) past perfect tense
(0) of
(0) present tense
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Text of page 19
MKG-XIXfTECHCIEl1 T/02
91. I shall be twenty next Saturday. 96. He wait any longer.
(A) present continuous (A) has not
(8) future tense
(8) need not
(C) past tense
(0) past perfect tense (C) had not
(0) was not
Fill in the blanks with appropriate phrasal
97. like to know what my duty is.
verb.
(A) would
92. I had asked him to meet me but he did
(8) will
not at all.
(C) can
(A) turn up
(8) turn in (0) shall
(C) turn down
(0) turn out Add suitable question tags.
93. Gandhiji wanted that the caste distinctions
98. Gopi broke the glass, _
be _
(A) wound up (A) is he ?
(8) worked out (8) isn't it ?
(C) wiped out
(C) did he?
(0) wear out
(0) didn't he ?
94. The examinations have been _
indefinitely. 99. They haven't come yet, _
(A) put on (A) have they?
(8) put up (8) haven't they?
(C) put down
(C) don't they?
(0) put off
(0) didn't they?
Fill in the blanks with appropriate modals.
100. You are free,
95. I tried to get up but I move.
(A) are you?
(A) can't
(8) wan't (8) arn't you?
(C) couldn't (C) aren't you?
(0) wasn't
(0) do you?
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Text of page 20
MKG-XIXlTECHCIEl1 T/02
SECTION - B
Post Specific Subject-Related Questions
101 . Extinguisher most suitable for flammable 107. The coarse type of hacksaw blades
liquid fire and running liquid fire is have a pitch of
(A) dry powder (A) 1.8 mm (B) 1.4 mm
(B) halon (C) 1 mm (D) 0.8 mm
(C) foam
(D) carbon dioxide 108. The tool used for setting jobs on
machine parallel to a datum surface is
102. Isolation of fire from the supply of
(A) Radius gauge
oxygen by blanketing it with foam or
(B) Bench vice
sand is called
(C) Universal surface gauge
(A) starving (B) smothering
(C) cooling (D) ionising (D) Jenny calipers
103. The organisation which certifies the 109. The part that fits into the slot of the
product meet its specification and drilling machine spindle is
passes necessary test in India is (A) shank (B) margin
(A) JIS (B) DIN (C) flutes (D) tang
(C) BIS (D) BSI
110. The chisel used by fitters for squaring
104. The category of safety sign, triangular materials at the corners is
in shape with yellow background with (A) Half round nose chisel
black border and symbol is (B) Diamond point chisel
(A) warning signs (C) Flat chisel
(B) mandatory signs (D) Cross cut chisel
(C) prohibition signs
(D) information signs 111. The middle portion of the hammer head
is called
105. The file tool which is used for high (A) cheek (B) face
degree finishing is
(C) peen (D) eyehole
(A) rough file
(B) smooth file 112. The cutting speed in meter per minute
(C) second cut file for drilling mild steel is in the range of
(D) dead smooth file (A) 20-30 (B) 30-40
(C) 70-100 (D) 20-35
106. The 30 degree point prick punch is
used for 113. If T = sheet thickness, the diameter of
(A) locating holes the rivet is calculated as
(B) making light punch marks needed (A) (21/3 to 3) x T
to position dividers (B) (11/2 to 3) x T
(C) witness marks (C) (21/2 to 3) x T
(D) good seating for starting the drill (D) (11/3 to 3) x T
-20-
Text of page 22
MKG-XIXlTECHCIEl1T/02
~
114. The stake used in sheet metal for 120. If V = voltage, R = rssstarcs. t ~ timQ,
making sharp bends, for bending edges the heat produced or energy dissipated
and for folding is is given by the equation
(A) blow horn square
(A) VVR (8) VVR2
(8) bevel edge square
(C) square (C) V2VR (D) Vt2/R
(D) hatchet 121. Kirchhoff's current law is applicable to
115. The conductance of a conductor of only
resistance 100 mn is (A) Closed loops in a network
(A) 1 Siemens (8) 10 Siemens (8) Electronic circuits
(C) 100 Siemens (D) 0.1 Siemens (C) Junctions in a network
116. The resistance of a coil which draws a (D) Electric circuits
current of 50 mA from a 120 V supply is
122. According to Kirchhoff's voltage law, the
(A) 2.4 kn (8) 24 kn
(C) 0.24 kn (D) 2.4 n algebraic sum of all voltage drops and
E.M.Fs. in any closed loop of a network
117. A charge of 35 mCoulomb is transferred is always
between two points in a circuit in a time of (A) Zero
20 ms.The value of current flowing is
(8) Positive
(A) 0.25 A (8) 0.57 A
(C) 1.75 A (D) 2.25 A (C) Negative
(D) Determined by battery E.M.Fs.
118. The currentflow around the circuit from the
positive terminal of the source of E.M.F. 123. The S.1. unit of resistivity is
to the negative terminal is called (A) ohm-meter (8) ohm-meter-
(A) conventional current flow (C) ohm/meter (D) mho-meter
(8) electron current flow
(C) non conventional current flow 124. The effect of rise in temperature on
(D) leakage current flow resistance of electrolytes, insulators,
119. In the below given circuit the voltage partial conductors such as carbon is
drop across the resistance R is (A) to increase the resistance
I (8) to decrease the resistance
(C) remain constant
r 110.1 0 (D) keeps alternating with increase and
decrease
V IIR
, 20
125. Out of the following which is true for a
parallel circuit?
E I 12 V
-L
(A) Powers are not additive
(8) Branch currents are not additive
B (C) Conductances are additive
(A) 11.94 V (8) 10.56 V (D) Different voltage acts across all
(C) 11.31 V (D) 11.42 V parts of the circuit
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Text of page 24
MKG-XIXfTECHCIEl1T/02
126. The Wheatstone bridge can be used for 132. Out of the following, the diamagnetic
the measurement of material is
(A) Resistance only (A) Aluminium (B) Nickel
(B) Resistance and capacitance only (C) Cobalt (D) Copper
(C) Resistance and inductance only
(D) Resistance, capacitance and 133. The law which states that the induced
inductance current always develops a flux which
opposes the very cause that produced
127. The resistors having no film or resistive
it is
coating is used in their construction is
(A) Wire-wound (A) Lambert's law (B) Lenz's law
(B) Cermet (C) Faraday's law (D) Joule's law
(C) Deposited Carbon
134. In a magnetic circuit, the ratio of
(D) Metal Glaze
magneto motive force and reluctance is
128. A voltage-dependent metal-oxide (A) magnetic permeability
material whose resistance decreases (B) magnetic field strength
sharply with increasing voltage is (C) magnetic flux density
(A) Thermistor (B) Varactor
(D) magnetic flux
(C) Varistor (D) Thyristor
129. Two points are said to be open-circuited 135. Which of the statement is false for
when magnetic lines of force?
(A) resistance between the two points (A) They always form complete closed
is infinite loop.
(B) there is flow of current between the (B) They behave as if they are not
two points elastic.
(C) no voltage can exist across it
(C) Radiate from the north (N) pole to
(D) current through it is very large
the south (8) pole.
130. A resistance of 10 o is connected in (D) They never intersect.
series with two resistances each of 15 n
arranged in parallel. The value of the 136. A capacitor consists of two
resistance that must be shunted across (A) Insulators separated by a dielectric
this parallel combination so that the total (B) Conductors separated by an
current taken shall be 1.5 Ampere with insulator
20 Volts applied is (C) Ceramic plates and one mica disc
(A) 12 n (B) 5 o
(D) Silver-coated insulators
(C) 10 n (D) 6 n
137. In a purely inductive circuit, the current
131. To measure a resistance with a high
degree of accuracy, we employ a lags behind the applied voltage by a
(A) Wheatstone Bridge (A) Half cycle
(B) Multimeter (B) Full cycle
(C) Ohmmeter (C) Quarter cycle
(D) Clampmeter (D) Zero cycle
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Text of page 26
MKG-XIXffECHCIEl1 T/02
~
136. In a series R-L-C circuit containing 143. A voltmeter with a resistance of 10000 n
R = 2.5 0, L = 0.06 H, C = 6.8 IlF is connected with two 10000 0 resistors
connected to a 230 V, 50 Hz supply, across a 200 V, 3-phase system as shown.
the power factor will be The reading of the voltmeter will be
(A) Unity R
(8) Leading
(C) Lagging
(D) Zero
139. For a sinusoidal wave, peak factor
equals to
(A) 1.414
Y'
(8) 1.2
(C) 1.11 8
(D) 1.732 (A) 200 V (8) 346.41 V
(C) 115.47V (D) 66.67 V
140. The a.c. system is preferred to d.c.
system because 144. The advantage of star-connected supply
(A) d.c. motors do not have fine speed system is that
control (A) line current is equal to phase
(8) high-voltage a.c. transmission is current
less efficient (8) two voltages can be used
(C) a.c. voltages can be easily changed (C) phase sequence can be easily
in magnitude changed
(D) d.c. voltage cannot be used for (D) it is a simple arrangement
domestic appliances 145. When a lead-acid cell is fully charged
141. Reactive power is given by the (A) anode is converted into Pb
expression (8) cathode is converted into Pb02
(C) specific gravity of the electrolyte
(A) VI cos 0
rises to about 1.28
(8) VI
(D) both plates become red
(C) VI tan 0
(D) VI sin 0 146. During electrolysis, mass of an element
liberated at the electrode is
142. A coil having a resistance of 7 0 and (A) directly proportional to chemical
an inductance of 31.8 mH is connected equivalent weight of the element
to a 230 V, 50 Hz supply. The circuit (8) inversely proportional to atomic
current is weight of the element
(A) 18.85 A (C) directly proportional to the valency
(8) 20.67 A of the element
(C) 16.56 A (D) inversely proportional to chemical
(D) 14.37 A equivalent weight of the element
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Text of page 28
•
147. In a solar cell, to produce the P-type
region over the silicon wafer, it is doped
with
M KG-XIXlTECHCIEl1 T/02
153. The error caused by increase in
impedance of the coil with increase in
the frequency of the alternating current
(A) Arsenic (B) Cadmium in a moving-iron instruments can be
(C) Phosphorous (D) Boron removed by
(A) using Perm-alloy, which have
148. When the pointer of an indicating
negligible hysterisis loss
instrument is in motion, then deflecting
(B) connecting an inductor in parallel
torque is opposed by
with the swamp resistance R of the
(A) Retarding torque
instrument
(B) Both damping and controlling
(C) connecting a capacitor in parallel
torques
with the swamp resistance R of the
(C) Damping torque only
instrument
(D) Controlling torque only
(D) magnetic shielding of the working
149. The watt-hour meter is parts
(A) an integrating instrument 154. The range of a moving coil instruments,
(B) an indicating instrument when used as a voltmeter, can be extended
(C) a recording instrument by using a multiplier which is a
(D) a transfer instrument (A) low inductive resistance connected
in parallel with it
150. Out of the following, the most sensitive
(B) high non-inductive resistance
instrument is
connected in series with it
(A) Moving-iron
(C) high inductive resistance connected
(B) Dynamometer
in series with it
(C) Permanent-magnet moving coil
(D) high non-inductive resistance
(D) Hot-wire connected in parallel with it
151 . For measuring high values of alternating 155. e
If is the angle made by the normal to the
current with a dynamometer ammeter, illuminated surface with the direction of
we use a the incident flux, the illumination at various
(A) Shunt points on a horizontal surface illuminated
(B) Potential transformer by the same source varies as
(C) Current transformer (A) cos3e (B) coss
(D) Multiplier (C) t/cosa (D) cos2e
152. Moving-iron instruments can be used 156. A room 8 m x 12 m is lighted by
for measuring 15 lamps to a fairly uniform illumination
(A) direct currents and voltages only of 100 lumen/m-'. Given the output of
(B) altemating current and voltages only each lamp is 1600 lumens, the utilization
(C) radio frequency currents coefficient of the room is
(D) both AC and DC currents and (A) 30% (B) 50%
voltages (C) 40% (D) 60%
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Text of page 30
MKG-XIXlTE,CHCIEl1 T/02
157. The S.1. unit of Luminous Intensity is 163. Transformers are rated in KVA instead
(A) -Lumen of KW because
(B) Candela (A) Total transformer loss depends on
(C) Lux volt-ampere
(0) Lumen metre (B) Load power factor is often unknown
(C) KVA is fixed whereas KW depends
158; The luminous efficiency of a sodium
on load power factor
vapour lamp is about
(0) It has become customary
(A) 10 lumen/watt
(B) 30 lumen/watt 164. A transformer has negative voltage
(C) 50 lumen/watt regulation when its load power factor is
(0) 70 lumen/watt (A) zero (B) unity
159. The number of electrodes in a High- (C) lagging (0) leading
pressure Mercury Vapour Lamp is 165. At relatively light loads, transformer
(A) 3 (B) 4 efficiency is low due to
(C) 2 (0) 1 (A) Secondary output is low
160. The E.M.F. equation, E2 of a transformer (B) Fixed loss is high in proportion to
of secondary turns N2, with magnetic flux the output
density Bm, magnetic area of core A, and (C) Copper loss is small
operating at frequency f is given by
(0) Transformer losses are low
(A) E2 = 4.44N2Bmf/A
(B) E2 = 4.44N2BmAf 166. The KVA rating of ordinary two winding
(C) E2 = N2Bmf/A transformer is increased when connected
as an auto transformer because
(0) E2 = 1.11 N2Bm Af
(A) inductive and conductive energy
161. A 2400 V/400 V single-phase transformer transfer
takes a no-load current of 0.5 A and the
(B) transformation ratio is increased
core loss is 400 W. The no load power
(C) secondary voltage is increased
factor is
(A) 0.33 (B) 0.40 (0) secondary current is increased
(C) 0.85 (0) 0.98 167. If the impedance triangle of two
transformers operating in parallel
162. The main purpose of using a core in a
are not identical in size, the two
transformer is to
transformers will
(A) decrease iron loss
(A) share the load equally
(B) prevent eddy current loss (B) get heated unequally
(C) decrease reluctance of the common (C) have a Circulatory current even
magnetic circuit when unloaded
(0) eliminate magnetic hysterisis (0) run with different power factor
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Text of page 32
•
168. Which of the following 3 phase transformer
connection is best suited for 3 phase,
4 wire system?
174.
MKG-XlxrrECHCIEl1T/02
The disadvantage of PVC conduit
system of wiring is
(A) its movement due to temperature
(A) Y-Y (B) fl-fl changes
(C) fl-Y (0) Y-fl (B) not resistant to acid and alkalies
169. In a 3 phase transformer a T-T connection (C) cannot be buried in lime or cement
has higher ratio of utilisation than V-V plaster
connection only when (0) more labour time as compared to
(A) non-identical transformers are steel conduit system
used
175. In a domestic wiring distribution, the
(B) load power factor is leading
load on each sub-circuit for a light and
(C) load power is unity
fan circuit is restricted to
(0) identical transformers are used
(A) 500 W (B) 680 W
170. In a plate earth electrode system, the (C) 800 W (0) 1000 W
plate earth electrodes when made of
galvanised iron or steel should not be 176. Unexpected expenditure due to increase
less than in cost rate of materials, loss due to floods
(A) 5.33 mm in thickness or any unforseen conditions is called
(B) 3.35 mm in thickness (A) overhead charges
(C) 6.30 mm in thickness (B) contingencies charges
(0) 4.60 mm in thickness (C) random charges
(0) out of hand expenses
171. A non melting sintered material that are
tipped to the contact of Miniature Circuit 177. Cleat wiring used in domestic interior
Breaker (MCB) is wiring is
(A) silver graphite
(A) Costly and used for temporary
(B) britannia silver
installations
(C) silver oxide
(0) sterling silver (B) Cheap and used for permanent
installations
172. The voltage drop between the supply
(C) Costly and used for permanent
point in any building and any outlet
should not be more than installations
(A) 5% of the nominal voltage (0) Cheap and used for temporary
(B) 2% of the nominal voltage installations
(C) 3.5% of the nominal voltage
178. If tinman's solder is used for cast iron
(0) 2.5% of the nominal voltage
soldering, the flux employed will be
173. A fuse wire employed to protect a circuit, (A) rosin
which must carry a current of 5 Ampere
(B) tallow
will have a critical value of
(C) zinc chloride
(A) 2 - 3.6 A (B) 5 A
(C) 5.6 - 8 A (0) 8 - 10 A (0) sal ammonia rosin
-32-
Text of page 34
•
179. If In' number of cells having the same
E.M.F. and internal resistance are
connected in parallel, the total internal
185.
MKG-XIXlTECHCIEl1 T/02
The illumination or lighting system in
which the light produced is equally
distributed upwards and downwards is
resistance of In' cells will be (A) semi-direct
(A) internal resistance of one celi/n (8) indirect
(8) n x internal resistance of one cell (C) semi-indirect
(C) n2 x internal resistance of one cell (0) general diffusing
(0) internal resistance of one cell/n2
186. The resistance of a conductor varies
180. Advantage of a nickel cadmium cell or a inversely as
nickel-metal cell over a lead-acid cell is (A) length
(A) relatively more cheaper (8) area of cross section
(8) has a lower internal resistance (C) temperature
(C) is not self-discharging (0) resistivity
(0) has a higher efficiency 187. Capacitance of a parallel plate capacitor
181. An electrician solder consists of increases with
(A) 40% tin, 60% lead (A) increase in plate area and decrease
in distance between the plates
(8) 30% tin, 70% lead
(8) increase in plate area and distance
(C) 70% tin, 30% lead
between the plates •
(0) 60% tin, 40% lead
(C) decrease in plate area and decrease
182. In a domestic wiring installation, there in distance between the plates
are three power points each rated (0) decrease in plate area and value
1 KW.The number of power subcircuit of applied voltage
required is
188. A magnetically soft material is
(A) 1 (8) 2
characterized by
(C) 3 (0) 4
(A) have low permeability
183. The minimum size of aluminium cable (8) magnetic energy stored is low
used in a power subcircuit having a (C) have high coercive force
current carrying capacity of 15 Amps is (0) have high remanance
(A) 1.5 sq.mm (8) 2.5 sq.mm
189. The current in a circuit is given by
(C) 4 sq.mm (0) 6sq.mm
I =120 sin 314t Ampere, the maximum
184. The winding method employed for small value and frequency of current is
transformers which results in better (A) 60--./2A, 100 Hz
utilisation of winding space is (8) 120--./2A, 100 Hz
(A) layer by layer (8) random (C) 120 A, 50 Hz
(C) round (0) stack (0) 84.85 A, 50 Hz
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Text of page 36
MKG-XIXlTECHCIEl1 T/02
~
190. The test conducted to check whether 195. The motor employed in domestic food
switches are connected in phase/live mixer is
cable in a domestic installation is (A) repulsion motor
(A) Continuity test
(8) reluctance motor
(8) Open circuit test
(C) hysterisis motor
(C) Leakage test
(D) Polarity test (D) universal motor
191. 196. The function of capacitor across
Open circuit test on a transformer is
conducted to determine the supply to the fluorescent tube is
(A) Hysterisis loss primarily to
(8) Copper loss (A) stabilise the arc
(C) Core loss (8) reduce the starting current
(D) Eddy current loss (C) improve supply power factor
192. (D) reduce the noise
The secondary of which of the following
transformers is always kept closed? 197. In a magnetic field, the permeability of
(A) potential transformer free space has got a val ue of
(8) step-up transformer (A) 41t Henry/meter
(C) step-down transformer
(8) 41t x 10-7 Henry/meter
(D) current transformer
(C) 41t x 10-6 Henry/meter
193. During open circuit test of transformer (D) 41t x 10-8 Henry/meter
(A) primary is supplied with rated
voltage 198. The terminal potential difference of a
(8) primary is supplied with full load source of E.M.F. decreases as the load
current on it is
(C) primary is supplied with current at (A) increased (8) zero
low voltage (C) decreased (D) constant
(D) primary is supplied rated KVA
199. Ampere turns/meter is the S.1. unit of
194. For a series circuit containing pure (A) magnetic flux density
resistance and pure inductance the
(8) magnetomotive force
voltage and current are given by
i(t) = 5 sin (314t + 21t/3), (C) magnetic field strength
v(t) = 15 sin (314t + 51t/6). The circuit (D) reluctance
current
(A) lags behind the applied voltage 200. The flux linking a 100 turn coil changes
by 60° from 5 mWb to 15 mWb in a time of
(8) lags behind the applied voltage 2 ms. The average E.M.F. induced in
by 30° the coil is
(C) leads the applied voltage by 30° (A) 500 V (8) 600 V
(D) leads the applied voltage by 60° (C) - 450 V (D) -500V
-36-
Text of page 38
MKG-XlxrrECHCIEl1 T/02
SPACE FOR ROUGH WORK
~~~~~
-38-
Text of page 39
MKG-XIXlTECHCIEl1 T/02
SPACE FOR ROUGH WORK
~~~~~
-39-
Text of page 40
MKG-XlxrrECHCIEl1 T/02
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Source: Delhi Subordinate Services Selection Board. Question paper published by Delhi Subordinate Services Selection Board.