Andaman Nicobar Group C 2023: Directorate of Shipping Services, Junior Engineer (Electronics and Communication)

1.



From the given alternative words, select the word which cannot be formed using
the letters of the given word: Given: IMPASSIONABLE



(A)



IMPASSABLE



(B)



IMPOSSIBLE



(C)



IMPASSIVE



(D)



IMPASSION



Answer: (C) IMPASSIVE



2.



BDAC : FHEG : : NPMO : ?

(A)



RQTS



(B)



NTRC



(C)



TRQS



(D)



RTQS



Answer: (D) RTQS



3.



What is the pH value of the human body?



(A)



9.2 to 9.8

(B)



7.0 to 7.8



(C)



6.1 to 6.3



(D)



5.4 to 5.6



Answer: (B) 7.0 to 7.8



4.



Writer : Pen : : ?



(A)



Needle : Tailor



(B)



Artist : Brush

(C)



Painter : Canvas



(D)



Teacher : Class



Answer: (C) Painter : Canvas



5.



NUMERAL : UEALRMN : : ALGEBRA : ?



(A)



LRBAGEA



(B)



BARLAGE



(C)



LERAGBA

(D)



LERABGA



Answer: (D) LERABGA



6.



FGID : OPQR : : BCDE : ?



(A)



KLMJ



(B)



KLMN



(C)



IUVW



(D)



STUW

Answer: (B) KLMN



7.



Ashok's mother was 3 times as old Ashok 5 years ago. After 5 years she will be
twice as old as Ashok. How old is Ashok today?




(A)



10 years



(B)



15 years



(C)



20 years



(D)



25 years



Answer: (B) 15 years

8.



Which one of the following is not a prime number?



(A)



31



(B)



61



(C)



71



(D)



91



Answer: (D) 91



9.



How many 3-digit numbers are completely divisible 6 ?

(A)



149



(B)



150



(C)



151



(D)



166



Answer: (B) 150



10.



If the number 5 * 2 is divisible by 6, then * = ?



(A)



2

(B)



3



(C)



6



(D)



7



Answer: (A) 2



11.



Two goods train each 500 m long, are running in opposite directions on parallel
tracks. Their speeds are 45 km/hr and 30 km/hr respectively. Find the time taken
by the slower train to pass the driver of the faster one.




(A)



12 sec



(B)

24 sec



(C)



48 sec



(D)



60 sec



Answer: (B) 24 sec



12.



A, B and C jointly thought of engaging themselves in a business venture. It was
agreed that A would invest Rs. 6500 for 6 months, B, Rs. 8400 for 5 months and
C, Rs. 10,000 for 3 months. A wants to be the working member for which, he was
to receive 5% of the profits. The profit earned was Rs. 7400. Calculate the share
of B in the profit.




(A)



Rs. 1900



(B)

Rs. 2660



(C)



Rs. 2800



(D)



Rs. 2840



Answer: (B) Rs. 2660



13. (Discarded)



A train moving at 50 km/hr crosses a bridge in 45 seconds. The length of train is
150 meters. Find the length of the bridge.




(A)



525 m



(B)



545 m

(C)



575 m



(D)



500 m



Answer: (C) 575 m



14.



Two trains are running in opposite directions with the same speed. If the length
of each train is 120 metres and they cross each other in 12 seconds, then the speed
of each train (in km/hr) is:




(A)



10



(B)



18



(C)

36



(D)



72



Answer: (C) 36



15.



"Identify the segment in the sentence which contains a grammatical error.

The man played the flute and led all the mouse out of the town."




(A)



all the mouse



(B)



the flute and led



(C)



out of the town

(D)



The man played



Answer: (A) all the mouse



16.



Choose the correctly spelt word.



(A)



Maneouvrable



(B)



Manoeuvrrable



(C)



Manoeuvrable



(D)



Manouverable

Answer: (C) Manoeuvrable



17. (Discarded)



"In the following sentence a word of phrase is written in bold. For each bold part
four word/phrases are listed below each sentence. Choose the word nearest in
meaning to bold part.

He is a good looking but insipid young man."



(A)



arrogant



(B)



unscrupulous



(C)



sick



(D)



lacking in spirit



Answer: (D) lacking in spirit

18. (Discarded)



"Select the most appropriate option to improve the underlined segment in the
given sentence. If there is no need to improve it, select ‘No improvement’.

The place was not cold only and also damp."




(A)



No improvement



(B)



only cold not also



(C)



not only cold but also



(D)



not only cold and both



Answer: (C) not only cold but also



19.

"Select the correct direct form of the given sentence.

Saaransh said he had solved the crossword the previous day."




(A)



Saaransh said, “I solved the crossword yesterday.”



(B)



Saaransh said, “He have solved the crossword yesterday.”



(C)



Saaransh said, “I have solved the crossword the previous day.”



(D)



Saaransh said, “He has solved the crossword the previous day.”



Answer: (A) Saaransh said, “I solved the crossword yesterday.”



20.



These medicines are ____ for curing cold.

(A)



Proper



(B)



Real



(C)



Effective



(D)



Capable



Answer: (C) Effective



21.



Anita ___ me of a girl I used to know.



(A)



remembers

(B)



recalls



(C)



recollects



(D)



reminds



Answer: (D) reminds



22.



Select the synonym of carnal



(A)



spiritual



(B)



sensual

(C)



decent



(D)



chaste



Answer: (B) sensual



23. (Discarded)



The RBI has decided new Business timing for RTGS. What are the new timings?



(A)



6:00 AM- 6.30 PM



(B)



6:30 AM- 5.00 PM



(C)



7:00 AM – 6.00 PM

(D)



7:30 AM – 6.00 PM



Answer: (C) 7:00 AM – 6.00 PM



24.



Which state has decided to recruit women drivers for government vehicles?



(A)



Kerala



(B)



Tamil Nadu



(C)



Andhra Pradesh



(D)



Telangana

Answer: (A) Kerala



25.



The National War Memorial in Delhi was inaugurated on



(A)



24th February, 2019



(B)



25th February, 2019



(C)



26th February, 2019



(D)



28th February, 2019



Answer: (B) 25th February, 2019



26.

Who becomes the youngest player to takes a hat-trick in IPL cricket history?



(A)



Jasprit Bumrah



(B)



Sam Curran



(C)



Rashid Khan



(D)



S Gopal



Answer: (B) Sam Curran



27.



A syndicated loan is a loan that is _____?



(A)

Secured by Mortgages



(B)



Unsecured



(C)



Provided by Group of Banks



(D)



Provided to a Group of Customers



Answer: (C) Provided by Group of Banks



28.



What is the theme of World Photography Day 2023?



(A)



Landscapes



(B)

Dedicated to History



(C)



Understanding Clouds



(D)



Be Nice



Answer: (A) Landscapes



29.



The green planet in the solar system is?



(A)



Mars



(B)



Uranus



(C)

Venus



(D)



Earth



Answer: (B) Uranus



30.



Right to emergency medical aid is a



(A)



Legal Right



(B)



Illegal Right



(C)



Constitutional Right



(D)

Fundamental Right.



Answer: (D) Fundamental Right.



31.


Which of the following is a part of SMPS component?


(A)


Output filter coil


(B)


MOSFET


(C)


Zener Diode


(D)


FET


Answer: (A) Output filter coil


32.

Automatic switching OFF function is accomplished in MCB by__________


(A)


Relay


(B)


Clutch


(C)


Bimetallic-strip


(D)


Diode


Answer: (C) Bimetallic-strip


33.


Which of these is a correct definition of electronic current?


(A)


Current that flows from lower potential to higher potential


(B)

The current which remains static


(C)


Current constituted by the flow of ions


(D)


Current that flows from higher potential to lower potential


Answer: (A) Current that flows from lower potential to higher potential


34.


The circuit design of switching regulated power supplies is ______________


(A)


Complex


(B)


Moderately complex


(C)


Simple

(D)


Not possible


Answer: (A) Complex


35.


The load regulation of switching regulated DC power supply is from
______________


(A)


0.05% - 0.5%


(B)


5% - 15%


(C)


25% - 35%


(D)


1.5% - 2.5%


Answer: (A) 0.05% - 0.5%

36.


The efficiency of switching regulated DC power supply is ______________


(A)


1-20%


(B)


70-85%


(C)


10-85%


(D)


10-20%


Answer: (B) 70-85%


37.


A Zener voltage regulator is used for _______load currents


(A)


High

(B)


Very High


(C)


Moderate


(D)


Small


Answer: (D) Small


38.


Where square wave inverters are used?


(A)


Computers


(B)


TV receiver


(C)

DVD Players


(D)


General lighting


Answer: (D) General lighting


39.


How the backup time of UPS can be increased?


(A)


Increase the VA rating of UPS


(B)


Increase the AH capacity of battery


(C)


Decrease the AH capacity of battery


(D)


Maintain battery terminal voltage always 90% of rating


Answer: (B) Increase the AH capacity of battery

40.


Which term refers that the mass of a substance liberated from an electrolyte by
one coloumb of electricity?


(A)


Electrolysis


(B)


Electro plating


(C)


Electro copying


(D)


Electro chemical equivalent



Answer: (D) Electro chemical equivalent



41.


The transmitter-receiver combination in the satellite is known as a _______

(A)


Relay


(B)


Repeater


(C)


Transponder


(D)


Duplexer


Answer: (C)Transponder


42.


Why are VHF, UHF, and microwave signals used in satellite communication?


(A)


More bandwidth


(B)


More spectrum space

(C)


Are not diffracted by the ionosphere


(D)


Economically viable


Answer: (C) Are not diffracted by the ionosphere


43.


Which of the following is not a common use for radio waves in the VHF band?


(A)


FM radio broadcasting


(B)


Walkie-talkie communication


(C)


Marine communications


(D)

Television broadcasting


Answer: (B) Walkie-talkie communication


44.


What is the full form of SSB modulation?


(A)


Shaky-sideband modulation


(B)


Separated-sideband modulation


(C)


Sorted-sideband modulation


(D)


Singe-sideband modulation


Answer: (D) Singe-sideband modulation


45.

The radar in which both transmission and reception is done using the same
antenna are called:


(A)


Monostatic radar


(B)


Bistatic radar


(C)


Monopole radar


(D)


Dipole radar


Answer: (A) Monostatic radar


46.


Pulse radar operating at 10GHz frequency has an antenna with a gain of 28 dB
and a transmitted power of 2kW. If it is desired to detect a target of cross section
12m, and the minimum detectable
signal is -90 dBm, the maximum range of the radar is:




(A)

8114 m


(B)


2348 m


(C)


1256 m


(D)


4563 m


Answer: (A) 8114 m


47.


“GPS Accuracy”
Which among the following is more accurate in its output?


(A)


Absolute positioning


(B)


Resection method

(C)


Modern GPS surveying


(D)


Conventional GPS method


Answer: (D) Conventional GPS method


48.


Which of the following indicates the correct set of classification for absolute
positioning?


(A)


Carrier wave, pseudo range


(B)


Pseudo range, SPS


(C)


SPS, carrier wave


(D)

Absolute positioning, SPS


Answer: (A) Carrier wave, pseudo range


49.


Which among the following can act as a cause wrong GPS tracking?


(A)


Refraction of signal


(B)


Strength of signal


(C)


Atomic clock


(D)


Reflection of satellite signals


Answer: (D) Reflection of satellite signals


50.

The accuracy speed of the GPS depends on ______________


(A)


Reflection of signal


(B)


Signal blockage


(C)


Refraction of signal


(D)


Position of satellite


Answer: (B) Signal blockage


51.


What is Artificial Intelligence?


(A)


Artificial Intelligence is a field that aims to make humans more intelligent


(B)

Artificial Intelligence is a field that aims to improve the security


(C)


Artificial Intelligence is a field that aims to develop intelligent machines


(D)


Artificial Intelligence is a field that aims to mine the data


Answer: (C) Artificial Intelligence is a field that aims to develop intelligent
machines


52.


Who is the inventor of Artificial Intelligence?


(A)


Geoffrey Hinton


(B)


Andrew Ng


(C)


John McCarthy

(D)


Jurgen Schmidhuber


Answer: (C) John McCarthy


53.


Digital multimeter is used for _________


(A)


measuring AC and DC current, voltage and resistance


(B)


measuring AC current and voltage


(C)


measuring DC current and resistance


(D)
measuring AC voltage and resistance


Answer: (A) measuring (AC) and (DC) current, voltage and resistance


54.

Multimeter can be used as an ammeter by ________


(A)


connecting series resistances


(B)


making use of a transducer


(C)


making use of a transformer


(D)


connecting shunts


Answer: (D) connecting shunts


55.


An LCR meter is used to measure ______.


(A)


current

(B)


power


(C)


inductance


(D)


Voltage


Answer: (C) inductance


56.


Oscilloscope is __________


(A)


a ohmmeter


(B)


an ammeter


(C)


a voltmeter

(D)


a multimeter


Answer:(C) a voltmeter


57.


How many pressure and current coil is present in Megger?


(A)


Two pressure coils and one current coil


(B)


Two pressure coils and two current coils


(C)


One pressure coil and one current coil


(D)


One pressure coil and two current coils


Answer:(A) Two pressure coils and one current coil

58.


An induction type voltmeter are categorized into _______ types?


(A)


Two


(B)


Three


(C)


Four


(D)


Five


Answer: (A) Two


59.


An ammeter is a


(A)


Secondary instrument

(B)


Absolute instrument


(C)


Recording instrument


(D)


Integrating instrument


Answer: (A) Secondary instrument


60.


In an ammeter the shunt resistance usually _______ meter resistance




(A)


Equal to


(B)


Less than


(C)

Greater than


(D)


Of any value


Answer: (B) Less than


61.


Which of the following device can be used for measurement of frequency?


(A)


Voltmeter


(B)
Ammeter


(C)


Stroboscope


(D)


Barometer


Answer: (C) Stroboscope

62.


A power factor meter has ........ control springs




(A)


One


(B)


Two


(C)


Four


(D)


No


Answer: (D) No


63.


Which of the following method of measurement does a bridge circuit uses?


(A)

relative


(B)


comparison


(C)


absolute


(D)


differential


Answer: (B) comparison


64.


Identify the type of modulation where the frequency of the modulated wave is
equal to that of the carrier wave.


(A)


Frequency modulation


(B)


Amplitude modulation

(C)


Carrier modulation


(D)


Phase modulation


Answer: (B) Amplitude modulation


65.


Of the following which is the preferred modulation scheme for digital
communication?


(A)


Pulse code modulation


(B)


Pulse amplitude modulation


(C)


Pulse position modulation


(D)

Pulse width modulation


Answer: (A) Pulse code modulation


66.


Which modulator is used for the generation of the DSB-SC signal?


(A)


Balanced modulator


(B)


Square law modulator


(C)


Armstrong phase modulator


(D)


Envelope detector


Answer: (A) Balanced modulator


67.

Which of the following requires the least bandwidth?


(A)


DSB SC


(B)


DSB


(C)


VSB


(D)


SSB


Answer: (D) SSB


68.


Which of the following stage is present in FM receiver but not in AM receiver?


(A)


Amplitude limiter


(B)

Demodulator


(C)


AM amplifier


(D)


Mixer


Answer: (A) Amplitude limiter


69.


Baseband compression produces ________


(A)


a small range of frequencies from low to high


(B)


a small range of different phases


(C)


a small range of angles

(D)


a small range of amplitude


Answer: (D) a small range of amplitude


70.


Which of the following is not an advantage of digital modulation?


(A)


Greater noise immunity


(B)


Greater security


(C)


Easier multiplexing


(D)


Less bandwidth requirement


Answer: (D) Less bandwidth requirement


71.

Which has same probability of error?


(A)


BPSK and QPSK


(B)


BPSK and ASK


(C)


BPSK and PAM


(D)


BPSK and QAM


Answer: (C) BPSK and PAM


72.


Which of the following modulation schemes gives the maximum probability of
error?


(A)


DBPSK

(B)


PSK


(C)


BFSK


(D)


ASK


Answer: (D) ASK


73.


_______ is a type of digital modulation.


(A)


Amplitude modulation


(B)


Frequency modulation


(C)

Answer: (A) Information rate: 15 Mbps; Symbol rate: 5 Msps


75.


Which of the following is not true about VHF propagation?


(A)


Can penetrate building walls


(B)


Can travel long distances


(C)


Transmitting antennas are huge


(D)


Can be received indoors


Answer: (C) Transmitting antennas are huge




76.

Standard AM broadcast stations usually use what type of transmitting antenna


(A)


Log periodic


(B)


Driven collinear array


(C)


Marconi array


(D)


Yagi-Uda


Answer: (C) Marconi array


77.


Which array uses two half-wave dipoles spaced along with one-half wavelength
apart?


(A)


Broad-end array

(B)


End- fire array


(C)


Back-fire array


(D)


Binomial array


Answer: (B) End- fire array


78.


Which among the following are the advantages of the Yagi antenna?
i. It has a gain that allows lower strength
ii. The antenna becomes strong for high gain levels
iii. It can be easily mounted

iv. It is mechanically relatively straight forward


(A)


i, iii, and iv


(B)


i, ii, and iv

(C)


ii, iii, and iv


(D)

Only ii


Answer: (A) i, iii, and iv



79.


Most radar antenna use a


(A)


Dipole


(B)


Broadside array


(C)


Horn and parabolic reflector


(D)

Collinear array


Answer: (C) Horn and parabolic reflector


80.


The discone antenna is


(A)


A useful direction-finding antenna


(B)


Used as a radar receiving antenna


(C)


Circularly polarized like other circular antennas


(D)


Useful as VHF receiving antenna


Answer: (D) Useful as VHF receiving antenna


81.

Which type of antenna is used for the transmission of microwave of 4 GHz to 20
GHz


(A)


Dish antenna


(B)


Parabolic dish antenna (PD(A)


(C)


Yagi antenna


(D)


Marconi antenna


Answer: (B) Parabolic dish antenna (PD(A)


82.


In radio transmission, what does the term 'attenuation' refer to?


(A)


The increase in signal strength over a distance

(B)


The distortion of the signal over a distance


(C)


The decrease in signal strength over a distance


(D)


The stability of the signal over a distance


Answer: (C) The decrease in signal strength over a distance


83.


What is a common use of a Band Pass Filter in Radio Engineering?


(A)


It allows all frequencies to pass through


(B)


It allows only a specific range of frequencies to pass through


(C)


It blocks all frequencies from passing through

(D)


It amplifies all frequencies equally


Answer: (B) It allows only a specific range of frequencies to pass through


84.


What is the function of a modem?


(A)


Encryption and Decryption


(B)


Converts data to voice and vice-versa


(C)


Convert analog signals to digital and vice-versa


(D)


Serves as a hardware anti-virus


Answer: (C) Convert analog signals to digital and vice-versa

85.


RADAR is an ________________ sensor?


(A)


Electro-magnetic


(B)


Electric


(C)


Magnetic


(D)


Static


Answer: (A) Electro-magnetic


86.


Echoes are observed from ____________ in Radars?


(A)


Targets

(B)


Antennas


(C)


Repeaters


(D)


Systems


Answer: (A)Targets


87.


Radars are ____________ devices?


(A)


Active Sensing


(B)


Passive Sensing


(C)

Static Sensing


(D)


Dynamic Sensing


Answer: (A) Active Sensing




88.


What should be placed at the initial receiver’s stage?


(A)


Voltage Regulator


(B)


Current Regulator


(C)


Transistor Amplifier


(D)


Multiplexer

Answer: (C) Transistor Amplifier


89.


What frequency determines the signal transmitted by the Radar?


(A)


Pulse Reallocation


(B)


Pulse Retrieving


(C)


Pulse Repetition Frequency


(D)


Post Reallocation Frequency


Answer: (C) Pulse Repetition Frequency


90.


Unwanted component in the signal received at the Radars receiver is ________?


(A)

Receiver Noise


(B)


Transmitter Noise


(C)


Threshold Noise


(D)


Noise Power


Answer: (A) Receiver Noise


91.


How many types does a pulse radar have?


(A)


Four


(B)


Three

(C)


Two


(D)


One


Answer: (C) Two


92.


What principle is used in MTI Radar?


(A)


Flemming Effect


(B)


Doppler Effect


(C)


Hall Effect


(D)


Thevenin’s Effect

Answer: (B) Doppler Effect


93.


What is utilized to detect targets that are non-stationary?


(A)


Basic Pulse Radar


(B)


Moving Target Indication Radar


(C)


Symmetric Radar


(D)


Discontinuous Wave Radar


Answer: (B) Moving Target Indication Radar


94.


Echo signal in FMCW radar is received by _________?

(A)


Transmitting Antenna


(B)


Oscillator


(C)


Receiving Antenna


(D)


Duplexer


Answer: (C) Receiving Antenna


95.


The ability of an antenna to focus its radiated power in a certain direction is
measured by which of the following property of the antenna?


(A)


Directivity


(B)

Impedance matching


(C)


Resonance


(D)


Antenna gain


Answer: (A) Directivity


96.


A short monopole antenna is a type of?


(A)


A short monopole antenna is a type of resonating antenna that consists of many
conducting elements


(B)


A short monopole antenna is a type of harmonic antenna that consists of two
conducting elements


(C)


A short monopole antenna is a type of horizontal antenna that consists of a
conducting element

(D)


A short monopole antenna is a type of vertical antenna that consists of a
conducting element


Answer: (D) A short monopole antenna is a type of vertical antenna that consists
of a conducting element.


97.


Name the region around an antenna where the electromagnetic waves it emits
behave consistently and predictably?


(A)


Near field region


(B)


Far-field region


(C)


Intensity field


(D)


Radiation field

Answer: (B) Far-field region


98.


Which of the following type of antenna has a directivity of 0 dB?


(A)


Horn antenna


(B)


General antenna


(C)


Patch antenna


(D)


Isotropic antenna


Answer: (D) Isotropic antenna


99.


Which of the following formula is used to calculate the bandwidth of an antenna?


(A)

Bandwidth= Higher frequency* lower frequency


(B)


Bandwidth= Higher frequency+ lower frequency


(C)


Bandwidth= Higher frequency/ lower frequency


(D)


Bandwidth= Higher frequency- lower frequency




Answer: (D) Bandwidth= Higher frequency- lower frequency


100.


____ refers to the frequency where an antenna exhibits its maximum efficacy and
radiation performance.


(A)


Quality factor


(B)

Fractional bandwidth


(C)


Resonant frequency


(D)


Cut off frequency


Answer: (C) Resonant frequency