JUNIOR INSTRUCTOR – ELECTRONIC MECHANIC

FINAL ANSWER KEY
Question Paper Code: 49/2018/OL
Category Code: 613/2017
Exam: Junior Instructor (Electronic Mechanic)
Medium of Question: English
Date of Test 04-10-2018
Department Industrial Training
Alphacode A
Question1:-Who repealed the vernacular press act?
A:-Lord Litton
B:-Lord Ripon
C:-Lord Wellesley
D:-Lord Mount Batten
Correct Answer:- Option-B
Question2:-The pioneer of Indian Communism is
A:-P.C. Ray
B:-B.G. Tilak
C:-Bipan Chandra Pal
D:-M.N. Roy
Correct Answer:- Option-D
Question3:-‘Kanya Van Samrudhi Yojana’ is launched by
A:-Maharashtra
B:-Andhra Pradesh
C:-Gujarat
D:-U.P.
Correct Answer:- Option-A
Question4:-The ‘Woods Dispatch’ of 1854 is associated with
A:-Setting up of Forest Department in India
B:-Establishment of Revenue Department in India
C:-Establishment of Universities in India
D:-Setting up of Railways in India
Correct Answer:- Option-C
Question5:-The percentage of earth surface covered by India is
A:-2.2%
B:-2.4%
C:-2.6%
D:-2.8%
Correct Answer:- Option-B
Question6:-The first indigenously built atomic power station in India was
A:-Tarapur
B:-Rawatbhata
C:-Kalpakkam
D:-Kakrapar
Correct Answer:- Option-C
Question7:-The place where salt satyagraha took place in Kerala?
A:-Kollam
B:-Payyannur
C:-Muzhikkulam
D:-Kodungallur
Correct Answer:- Option-B
Question8:-23rd May 1931 is associated with
A:-Surya Sen
B:-Ajith Singh
C:-Bhagat Singh
D:-W.C. Banerjee
Correct Answer:- Option-C
Question9:-The 8th Five Year Plan in India was implemented between
A:-1980-1985
B:-1985-90
C:-1990-92
D:-1992-97
Correct Answer:- Option-D
Question10:-The forced labour without remuneration in pre-modern Kerala was known as
A:-Anchuvannam
B:-Manigramam
C:-Kacham
D:-Uzhiyam
Correct Answer:- Option-D
Question11:-At which place, Vaikunda Swamikal attained enlightenment and assumed the title ‘Vaikundar’?
A:-Tiruchendur
B:-Muttapathy
C:-Thycaud
D:-Madurai
Correct Answer:- Option-A
Question12:-In which year Sri. Brahmananda Sivayogi formed a new philosophy or religion called Anandadarsha?
A:-1889
B:-1890
C:-1892
D:-1895
Correct Answer:- Option-C
Question13:-Which among the following works of Thycaud Ayya showed his scholarship as a Vedantist?
A:-Christhumatha Saaram
B:-Brahmotharakandam
C:-Pracheena Keralam
D:-Karuna
Correct Answer:- Option-B
Question14:-In the year 1922, Sri Narayana Guru built a temple at Murukkumpuzha and consecrated not an idol but a mere
inscription. Which among the following words are not inscribed in it?
A:-Truth
B:-Love
C:-Mercy
D:-Compassion
Correct Answer:- Option-D
Question15:-The Cochin Legislative Council that came into existence in 1925 was inaugurated in ________
A:-Tripunithura
B:-Cochin
C:-Kodungallor
D:-Puduvaippu
Correct Answer:- Option-A
Question16:-Who has won the Men’s Singles French Open Tennis tournament in 2018?
A:-Rafael Nadal
B:-Andy Murray
C:-Roger Federer
D:-Novak Djokovic
Correct Answer:- Option-A
Question17:-The first fish on earth known to be truly warm blooded is _________
A:-Salmon
B:-Hogfish
C:-Flathead Grey Mullet
D:-Opah
Correct Answer:- Option-D
Question18:-Which of the following was selected as the best motion picture and took home the Oscar 2018?
A:-La La Land
B:-Moonlight
C:-Hacksaw Ridge
D:-Arrival
Correct Answer:- Option-B
Question19:-The place where International Bhuddhist conference was held in 2018?
A:-Lumbini
B:-Gaya
C:-Patna
D:-Banaras
Correct Answer:- Option-A
Question20:-NASA’s _________ discovered ancient components necessary for life on Mars.
A:-Discovery
B:-Endeavour
C:-The Curiosity
D:-Columbia
Correct Answer:- Option-C
Question21:-The software used for high performance numerical computation and visualization
A:-MASM
B:-MATLAB
C:-MENDELEY
D:-TASM
Correct Answer:- Option-B
Question22:-VHSIC Hardware Description Language is commonly called
A:-VHDL
B:-Verilog HDL
C:-VHSHDL
D:-None of these
Correct Answer:- Option-A
Question23:-In D’Arsonval Movement the torque exerted on the pivoted coil is proportional to the applied
A:-Voltage
B:-Current
C:-Power
D:-Amplitude
Correct Answer:- Option-B
Question24:-LVDT is used to measure
A:-Temperature
B:-Humidity
C:-Displacement
D:-Magnetic Flux
Correct Answer:- Option-C
Question25:-All pass filters are used for
A:-Phase correction
B:-Noise reduction
C:-Attenuation
D:-Amplification
Correct Answer:- Option-A
Question26:-A network designed to attenuate certain frequencies and allow other to pass without attenuation is called
A:-Filter
B:-Attenuator
C:-Low noise amplifier
D:-Pre-Amplifier
Correct Answer:- Option-A
Question27:-The instrument used to display a signal in frequency domain is
A:-CRO
B:-Wave Analyser
C:-Spectrum Analyser
D:-DSO
Correct Answer:- Option-C
Question28:-IC 7447 is
A:-Encoder IC
B:-Comparator IC
C:-Multiplexer IC
D:-Decoder IC
Correct Answer:- Option-D
Question29:-The element used to separate transmitting and receiving signals in a single antenna system
A:-Detector
B:-Mixer
C:-Low Noise Amplifier
D:-Duplexer
Correct Answer:- Option-D
Question30:-Which one is not an internal part of PLC?
A:-CPU
B:-Timer
C:-Communication interface
D:-DIMM
Correct Answer:- Option-D
Question31:-In an SCR Holding current is
A:-Equal to latching current
B:-Less than Latching current
C:-Greater than Latching current
D:-Zero
Correct Answer:- Option-B
Question32:-The synchronous speed of a synchronous motor is directly proportional to
A:-Number of poles
B:-Applied voltage
C:-Frequency of input voltage
D:-None of these
Correct Answer:- Option-C
Question33:-Bandwidth of an FM radio station
A:-250 KHz
B:-175 KHz
C:-200 KHz
D:-10.5 KHz
Correct Answer:- Option-C
Question34:-Number of Flip Flips required to construct a MOD-12 counter
A:-12
B:-6
C:-4
D:-3
Correct Answer:- Option-C
Question35:-The IC 8279 is
A:-DMA controller
B:-PPI
C:-Interrupt controller
D:-Keyboard and Display Interface
Correct Answer:- Option-D
Question36:-Which logic family has the lowest propagation delay?
A:-Standard TTL
B:-RTL
C:-HTL
D:-Schottky TTL
Correct Answer:- Option-D
Question37:-Anti-fuse is related to
A:-SCR
B:-SRAM
C:-ASIC
D:-MOSFET
Correct Answer:- Option-C
Question38:-____________ is not a microprocessor.
A:-8088
B:-8086
C:-Z80
D:-8051
Correct Answer:- Option-D
Question39:-What is the total power of an AM signal with 100 Watts carrier power and 100% depth of modulation?
A:-100 watts
B:-100 K watts
C:-150 watts
D:-150 K watts
Correct Answer:- Option-C
Question40:-Foster-Seeley demodulator is
A:-AM Demodulator
B:-FM Demodulator
C:-PAM Demodulator
D:-PPM Demodulator
Correct Answer:- Option-B
Question41:-SCR in reverse blocking mode, the junctions are reverse biased are
A:-J1 alone
B:-J2 and J3
C:-J2 Alone
D:-J1 and J3
Correct Answer:- Option-D
Question42:-Snubber circuits are used in SCR circuit for
A:-To limit current
B:-To protect from high dv/dt
C:-Protect from over temperature
D:-None of these
Correct Answer:- Option-B
Question43:-Which oscillator that can be fabricated in IC form?
A:-Relaxation Oscillator
B:-Crystal Oscillator
C:-RC Phase Shift Oscillator
D:-Wein Bridge Oscillator
Correct Answer:- Option-A
Question44:-Base of a number system is also called
A:-Count
B:-Radix
C:-Value
D:-Nibble
Correct Answer:- Option-B
Question45:-Divide by error interrupt in 8086 can initiated using
A:-RST 0
B:-by Resetting
C:-Using INTR
D:-INT 0
Correct Answer:- Option-D
Question46:-Using three numbers of resistances _____________ number of combinations can be made.
A:-3
B:-4
C:-5
D:-2
Correct Answer:- Option-B
Question47:-The ideal output resistance of a voltage amplifier is ___________ resistance.
A:-Unity
B:-Infinity
C:-1000
D:-Zero
Correct Answer:- Option-D
Question48:-CMRR is related to
A:-Inverter
B:-Chopper
C:-Amplifier
D:-Op-Amp
Correct Answer:- Option-D
Question49:-Capacity of a single layer Blu-Ray disc
A:-5.5 GB
B:-11 GB
C:-25 GB
D:-50 GB
Correct Answer:- Option-C
Question50:-Nyquist sampling theorem is related to
A:-BPSK
B:-PPM
C:-PCM
D:-FDM
Correct Answer:- Option-C
Question51:-The ideal data speed of 5 G mobile network
A:-20 GB/s
B:-5 GB/s
C:-1 GB/s
D:-22.5 GB/s
Correct Answer:- Option-A
Question52:-The type of connector used in telephones
A:-RJ-45
B:-RJ-11
C:-RJ-10
D:-RJ-9
Correct Answer:- Option-B
Question53:-Signals transmitted over several different paths is called
A:-Multi-user diversity
B:-Time diversity
C:-Space diversity
D:-None of these
Correct Answer:- Option-C
Question54:-The light detector used in optical fibre communication
A:-PIN Diode
B:-APD
C:-(1) and (2)
D:-None
Correct Answer:- Option-C
Question55:-Class C amplifiers are commonly used as ____________ Amplifiers.
A:-AF current
B:-AF voltage
C:-Radio frequency
D:-Pulse amplifier
Correct Answer:- Option-C
Question56:-The number of select lines in a 1 to 8 de-multiplexer is
A:-2
B:-3
C:-4
D:-8
Correct Answer:- Option-B
Question57:-Number of address lines required to address a memory system made of 2 modules of 1 MB memory chips
A:-12
B:-20
C:-21
D:-None of these
Correct Answer:- Option-C
Question58:-A Karnaugh Map is an abstract form of ___________ diagram.
A:-Cycle diagram
B:-Block diagram
C:-Logical diagram
D:-Venn diagram
Correct Answer:- Option-D
Question59:-A logic circuit that has memory is
A:-Sequential circuit
B:-Combinational circuit
C:-Both (1) and (2)
D:-None of these
Correct Answer:- Option-A
Question60:-The basic block in an HDL program is called
A:-Object
B:-Gate
C:-Module
D:-Model instantiation
Correct Answer:- Option-C
Question61:-Number of bits in a Binary Coded Decimal Number
A:-8
B:-4
C:-2
D:-1
Correct Answer:- Option-B
Question62:-All Keywords in c programming is
A:-Lower case
B:-Upper case
C:-Both upper and lower cases
D:-Digits only
Correct Answer:- Option-A
Question63:-In the specifications of a network interface card 10/100 stands for
A:-Length of Media
B:-Mega bits per second
C:-Protocol
D:-None of these
Correct Answer:- Option-B
Question64:-Ripple factor of Halfwave rectifier is
A:-1.21
B:-0.482
C:-40.6
D:-81.2
Correct Answer:- Option-A
Question65:-Major application of a Varactor diode is
A:-Rectifier
B:-Voltage doubler
C:-Demodulator
D:-Tuning circuit
Correct Answer:- Option-D
Question66:-Cut-in voltage of a Germanium diode is
A:-0.2 V
B:-0.6 V
C:-1.0 V
D:-0.7 V
Correct Answer:- Option-A
Question67:-Which of the following has highest internal resistance?
A:-A constant current source
B:-A constant voltage source
C:-Both of these
D:-None of these
Correct Answer:- Option-A
Question68:-A DC current source has a short circuit current of 4 mA and an open-circuit voltage of 20 V. The internal
resistance is
A:-5 KΩ
B:-100 Ω
C:-4 KΩ
D:-100 KΩ
Correct Answer:- Option-A
Question69:-The overall gain of RC coupled amplifier is small due to
A:-Large bandwidth
B:-Loading effect of successive stages
C:-Impedance of capacitor
D:-None of these
Correct Answer:- Option-B
Question70:-Intrinsic standoff ratio is the characteristics of
A:-Semi-conductor
B:-Tunnel diode
C:-FET
D:-UJT
Correct Answer:- Option-D
Question71:-Stability of a circuit increases with
A:-Positive feedback
B:-Negative feedback
C:-Current series feedback
D:-Both (1) and (2)
Correct Answer:- Option-B
Question72:-An emitter follower is
A:-Current series feedback circuit
B:-Voltage series feedback circuit
C:-Both (1) and (2)
D:-None of these
Correct Answer:- Option-A
Question73:-The output frequency of a crystal oscillator is stable because of
A:-High Q of the crystal
B:-Low XL/R Ratio
C:-Rigid Crystal Structure
D:-Small size
Correct Answer:- Option-A
Question74:-An Ideal Op-Amp has
A:-Zero output resistance
B:-Infinite Voltage gain
C:-Infinite input impedance
D:-All of these
Correct Answer:- Option-D
Question75:-An example for wave shaping circuit is
A:-Astable Multi-vibrator
B:-RC Relaxation oscillator
C:-Schmitt Trigger
D:-None of these
Correct Answer:- Option-C
Question76:-Number of diodes in a bridge rectifier is
A:-2
B:-4
C:-1
D:-None of these
Correct Answer:- Option-B
Question77:-Bucking voltage is another name for
A:-Back emf
B:-Breakdown voltage
C:-Saturation voltage
D:-Knee voltage
Correct Answer:- Option-A
Question78:-The gain of amplifier in RC phase shift oscillator should be
A:-180
B:-1
C:-28
D:-29
Correct Answer:- Option-D
Question79:-In a PTC thermistor, the temperature at which resistance increases rapidly is known as
A:-Temperature coefficient
B:-Switching point
C:-Break point
D:-Valley point
Correct Answer:- Option-B
Question80:-Forbidden energy gap of Germanium is
A:-0.72 eV
B:-1.12 eV
C:-1.1 eV
D:-2.1 eV
Correct Answer:- Option-A
Question81:-Esaki diode is another name for
A:-Schottky Diode
B:-PIN Diode
C:-Tunnel Diode
D:-DIAC
Correct Answer:- Option-C
Question82:-In a signed binary number, the sign used to indicate a negative number is
A:-0
B:-1
C:-00
D:-None of these
Correct Answer:- Option-B
Question83:-Which one is a serial to parallel converter?
A:-Decoder
B:-Multiplexer
C:-De-Multiplexer
D:-Both (1) and (2)
Correct Answer:- Option-C
Question84:-Number of modes of operations in TRIAC
A:-4
B:-2
C:-5
D:-1
Correct Answer:- Option-A
Question85:-Which one is not a networking component?
A:-RS 232
B:-NIC
C:-Router
D:-Bridge
Correct Answer:- Option-A
Question86:-How many bytes of bits addressable locations are present in 8051 microcontroller?
A:-20
B:-16
C:-8
D:-32
Correct Answer:- Option-B
Question87:-Instruction queue size in 8086 is ___________ bytes.
A:-6
B:-8
C:-12
D:-16
Correct Answer:- Option-A
Question88:-Number of transistors integrated in 8086 microprocessor
A:-32000
B:-29000
C:-20000
D:-64000
Correct Answer:- Option-B
Question89:-Inelastic scattering of photon is defined by
A:-Hall effect
B:-Miller effect
C:-Multiple scattering
D:-Raman effect
Correct Answer:- Option-D
Question90:-Rise time budget is related to
A:-Microwave link
B:-RF link
C:-Optical link
D:-None of these
Correct Answer:- Option-C
Question91:-Johnson-Nyquist noise is another name for ___________ noise.
A:-Short noise
B:-Flicker noise
C:-Transit time noise
D:-Thermal noise
Correct Answer:- Option-D
Question92:-According to _____________, a spatially varying electric field is always associated with a magnetic field that
changes over time.
A:-Lens law
B:-Faraday’s law
C:-Flemings LH law
D:-Maxwells equations
Correct Answer:- Option-D
Question93:-A hollow conductive metal pipe used for communication is called
A:-Microwave link
B:-Wave Guide
C:-Duct
D:-OFC
Correct Answer:- Option-B
Question94:-Which one is not an embedded operation system?
A:-Android
B:-WebOS
C:-iOS
D:-Solaris
Correct Answer:- Option-D
Question95:-The first Personal Computer (PC) was introduced by
A:-IBM
B:-Intel
C:-Microsoft
D:-Sun Microsystems
Correct Answer:- Option-A
Question96:-IEEE 802.11 is the standard used for
A:-GSM
B:-CDMA
C:-Ethernet
D:-WLAN
Correct Answer:- Option-D
Question97:-The point of intersection of DC and AC load lines is called
A:-Saturation point
B:-Cut-off point
C:-Operating point
D:-Peak point
Correct Answer:- Option-C
Question98:-A zener diode that has very narrow depletion layer will breakdown by ___________ mechanism.
A:-Zener breakdown
B:-Avalanche breakdown
C:-Both (1) and (2)
D:-None of these
Correct Answer:- Option-A
Question99:-In a multivibrator, we have _____________ feedback.
A:-Negative feedback
B:-50% positive feedback
C:-100% positive feedback
D:-None of these
Correct Answer:- Option-C
Question100:-For display of signal pattern ____________ voltage is applied to the horizontal plates of a CRO.
A:-Sinusoidal
B:-Saw tooth
C:-Triangular
D:-Rectangular
Correct Answer:- Option-B