Coal India Limited Question Paper Electronics - 2017 2018 Student Forum
 

Go Back   2017 2018 Student Forum > Management Forum > Main Forum



 
Thread Tools
  #1  
Old 14th July 2017, 01:32 PM
Unregistered
Guest
 
Posts: n/a
Default Coal India Limited Question Paper Electronics

I want the sample question paper of Electronics and Telecommunications of Coal India Limited so can you provide me?
Reply With Quote Quick reply to this message

  #2  
Old 14th July 2017, 02:16 PM
Super Moderator
 
Join Date: Mar 2013
Posts: 20,240
Default Re: Coal India Limited Question Paper Electronics

I am providing you the sample question paper of Electronics and Telecommunications of Coal India Limited

Coal India Limited Electronics and Telecommunications question paper


Q1: A Zenor Diode is invariably used with
A. Forward bias
B. Reverse bias
C. Zero bias
D. Either of A or C
Correct Answer: B
Q2: Which one of the following is not a semiconductor?
A. Diamond
B. Galtium‐Arsenide
C. Silicon
D. Germanium
Correct Answer: A

Q. Power diode is generally made from
a) Silicon
b) Germanium
c) Both
d) None of these

Q. When the both junction of NPN diode is reverse biased, then the diode is in which mode
a) Active
b) Cutoff
c) Saturation
d) inverted

Q. Which transistor mode gives the inverted output
a) Common Emitter
b) Common Base
c) Common Collector
d) None of these

Q. Which coupling gives the higher gain in case of amplifier
a) Capacitor coupling
b) Impedance coupling
c) Transformercoupling

Q. Which distortion is least objectionable in audio amplification
a) Phase
b) Frequency
c) Harmonic
d) Intermediation

Q. A narrow band amplifier has a band pass nearly-of central frequency
a) 33.3%
b) 10%
c) 50%

Q. Phase shift oscillator consists
a) RL
b) RC
c) RLC

Q. Multivibrater Produces
a) Sine wave
b) Square wave
c) Smooth wave
d) sawtooth

Q. Convert the 101101 Binary number into octal no
a) 65
b) 55
c) 51
d) 45

Ans: 55

Q. 10 in BCD
a) 10100
b) 1100
c) 010111
d) None of these

Ans: None of these

Q. Which PNP device has a terminal for synchronizing purpose
a) SCS
b) Triac
c) Diac
d) SUS

Q. Addition of indium in semiconductor crystal makes
a) PNP
b) NPN

Q. Free electron exists in which band
a) 1
b) 2
c) 3
d) Conduction band

Q. Ripple factor of half wave rectifier
a) 1.21
b) 0.48
c) 0.5

Q. Transistor that can be used in enhancement mode
a) NPN
b) UJT
c) JFET
d) MOSFET

Q. Following contributes to harmonic distortion in Amplifier
a) +Ve feedback
b) –Ve feedback
c) Defective active device

Q. High cutoff frequency
a) CB
b) CC
c) CE

Q. Which is used as data selector?
a) Encoder
b) Decoder
c) modulator
d) Demodulator

Q. Read write capable memory
a) RAM
b) ROM
c) Both
d) None of these

Q.the radix or base of hexadecimal number system is ———–
a) 8
b) 16
c) 5
d) none of these

Ans: 16

Q.the no of 1’s in the binary representation of the expression 162*9+162*7+16*5+3 are
a) 10
b) 23
c) 6
d) 4

Q. the no of latches in F/F are ——-
a) 1
b) 2
c) 3
d) 4

Q.how many flip-flops are required to construct Mod -12 counter
a) 5
b) 4
c) 12
d) none

Ans: 4

Q. which logic gate has the output is compliment of its input ———-
a) OR
b) AND
c) NOT
d) X-OR

Ans: NOT

Q.no.of 2-input multiplexers needed to construct a 210 input multiplexer…….
a) 12
b) 31
c) 20
d) 16

Q.By adding inverters to the inputs and output of a AND gate we can obtain ……………
a) OR
b) AND
c) NOT
d) X-OR

Ans: X-OR

Q.how many NAND gates are needed to realize OR gate ————–
a) 1
b) 2
c) 3
d) 4

Ans: 3

Q.which is the first integrated logic family —————
a) RTL
b) DTL
c) TTL
d) none of these

Q. Which logic gate has output high if and only if all inputs are low ———?
a) NOR
b) NAND
c) X-NOR
d) AND

Ans: NAND

Q.According to Boolean algebra 1+A+B+C =
a) A
b) A+B+C
c) 1
d) none of these

Ans: 1

Q. If a=0x6db7 and b=0x2ae9 then what is the value of a”b————–
a) binary number for 1001.1101?
b) decimal number for 19?
c) excess-3 code for 29?

Q.what is the value of A’+1 ?
a) A
b) A’
c) 1
d) none of these

Ans: 1

Q.2 in 4 bit number one bit indicates sign of the number then the locations are from
a) -8 to 8
b) -7 to 7
c) -16 to 16
d) None

Q.Avalanche photo diode is used when compared to PIN diode bcz
a)larger band width
b)high sensitivity
C)——-
d)——–



Q.some non zero DC voltage is to RC low pass circuit then the DC voltage in the output contains
a) Same as in input
b) Higher than input
c) Zero
d) Slightly increases

Q.if the output of the gate is always high then the gates applied to this logic are 0,0
a) NAND and EX-NOR
b) NAND and NOR
c) AND and X-NOR
d) OR and XOR

Ans:a

Q.Thermal Run away is not possible in FET bcz the flow of
a)minority careers
b)Transconductance
c)_____
d)none

Ans : minority careers

Q.which of the following is/are true about 1’s and 2’s compements:
i)In 1’s complement form. 0 has two representations
ii)in 1’s complement, the magnitude of lowest number is equal to the magnitude of highest number
iii)In 2’s complement, 0 has two representations

a) i only
b) i and ii
c) iii only
d) all of these

Q.In the hybrid parameter model of a transistor reverse transfer voltage ratio and forward transfer current ratio are respectively given by:
a) h11 and h21
b) h12 and h11
c) h21 and h11
d) None of these

Q.The largest negative no can be represented with 8 bits in 2’s compliment representation?
a)-256
b)-255
c)-127
d)-128

Ans: -128

Q. How many NAND gates required to implement AB+CD+EF
a) 1
b) 2
c) 3
d) 4

Ans: 4

Q. Transparent latch is seen in which type of flip flop
a) SR FF
b) D FF
c) JK FF
d) D FF

Ans: D FF

Q. Odd parity generator uses which logic?
a) Digital
b) Analog
c) Sequential
d) none

Q. Which type of ADC is fastest?
a) SARC
b) Counter type
c) Intigrated type
d) Flash

ANS: Flash/Parallel

Q. Which one of the following is fastest read/writable memory?
a) PROM
b) EEPROM
c) Flash
d) none

Ans: Flash

Last edited by Rajkumar Agarwal; 14th July 2017 at 02:19 PM.
Reply With Quote Quick reply to this message
Sponsored Links






















Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coal India Limited Sample Paper Electrical Unregistered Main Forum 1 11th March 2016 12:05 PM
Coal India Limited Management Trainee previous years paper Unregistered Main Forum 3 25th December 2015 01:19 PM
Electronics Corporation of India Limited Question Papers Unregistered Entrance Exams 1 10th December 2015 06:30 PM
Hindustan Aeronautics Limited Management Trainee Electronics last year question paper Unregistered Main Forum 3 7th December 2015 12:44 PM
Coal India Limited System Question Paper Unregistered Main Forum 1 21st November 2015 11:49 AM
Coal India Limited Question Paper Mechanical Engineering Unregistered Main Forum 1 7th November 2015 12:19 PM
Coal India limited sample paper computer science Unregistered Main Forum 1 8th August 2015 10:18 AM
CIL Coal India Exam Question Paper Unregistered Main Forum 5 17th May 2015 01:47 PM
Coal India Limited Management Trainee previous years question papers Unregistered Main Forum 3 23rd March 2015 05:10 PM
Coal India Recruitment Question Paper Unregistered Main Forum 3 19th March 2015 12:36 PM
Coal India Limited MT HR Exam Question Paper Unregistered Main Forum 1 3rd December 2014 01:46 PM
Coal India Limited Question Paper Unregistered Main Forum 1 1st December 2014 05:04 PM
Coal India Limited question papers? Unregistered Main Forum 1 14th November 2014 01:35 PM
Coal India Limited Exam Question Paper Unregistered Main Forum 3 11th November 2014 02:04 PM
Coal India Limited MT Exam Model Paper Unregistered Main Forum 1 20th October 2014 12:16 PM
Coal India Limited Management Trainee Exam Paper Unregistered Main Forum 1 20th September 2014 10:56 AM
Previous year question papers of Coal India Limited for Chemical Engineering Unregistered Main Forum 1 19th August 2014 04:09 PM
Electronics Corporation of India Limited Electronics last year question papers Unregistered Main Forum 1 1st August 2014 09:14 AM
Previous year question of ECE of GET of Electronics Corporation of India Limited Unregistered Jobs 1 29th July 2014 01:38 PM
Electronics Corporation of India Limited GET ECE last year question papers Unregistered Main Forum 1 25th July 2014 01:58 PM


Quick Reply
Your Username: Click here to log in

Message:
Options

Thread Tools Search this Thread



All times are GMT +5.5. The time now is 04:15 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0 PL2

1 2 3