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  #1  
24th July 2014, 09:28 AM
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Delhi Metro Rail Corporation Junior Engineer Electronics previous year question paper

Will you please share with me the Delhi Metro Rail Corporation Junior Engineer Electronics previous year question papers?
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  #2  
25th July 2014, 03:13 PM
Super Moderator
 
Join Date: Apr 2013
Re: Delhi Metro Rail Corporation Junior Engineer Electronics previous year question p

As you want to get the Delhi Metro Rail Corporation Junior Engineer Electronics previous year question papers so here it is for you:

1.The number of digits in octal system is
a.8
b.7
c.10
d. none

2..The number of digits in Hexadecimal system is
a.15
b.17
c.16
d. 8

3.The number of bits in a nibble is
a.16
b.5
c.4
d.8

4.The digit F in Hexadecimal system is equivalent to —— in decimal system
a.16
b.15
c.17
d. 8

5.Which of the following binary numbers is equivalent to decimal 10
a.1000
b.1100
c.1010
d.1001

6.The number FF in Hexadecimal system is equivalent to —— in decimal system
a.256
b.255
c.240
d.239

7.IC s are
a. analog
b. digital
c. both analog and digital
d. mostly analog

8.The rate of change of digital signals between High and Low Level is
a. very fast
b. fast
c. slow
d. very slow

9. Digital circuits mostly use
a. Diodes
b. Bipolar transistors
c. Diode and Bipolar transistors
d. Bipolar transistors and FETs

10.Logic pulser
a. generates short duration pulses
b. generate long duration pulses
c. generates long and short duration
d. none of above

11.What is the output state of an OR gate if the inputs are 0 and 1?
a.0
b.1
c.3
d.2

12.What is the output state of an AND gate if the inputs are 0 and 1?
a.0
b.1
c.3
d.2

13.A NOT gate has…
a. Two inputs and one output
b. One input and one output
c. One input and two outputs
d. none of above

14.An OR gate has…
a. Two inputs and one output
b. One input and one output
c. One input and two outputs
d. none of above

15.The output of a logic gate can be one of two _____?
a. Inputs
b. Gates
c.States
d. none

16.Logic states can only be ___ or 0.
a. 3
b. 2
c.1
d.0

17.The output of a ____ gate is only 1 when all of its inputs are 1
a. NOR
b. XOR
c. AND
d. NOT

18.A NAND gate is equivalent to an AND gate plus a …. gate put together.
a. NOR
b. NOT
c. XOR
d. none

19.Half adder circuit is ______?
a. Half of an AND gate
b. A circuit to add two bits together
c. Half of a NAND gate
d. none of above

20. Numbers are stored and transmitted inside a computer in
a. binary form
b. ASCII code form
c. decimal form
d. alphanumeric form

21.The decimal number 127 may be represented by
a. 1111 1111B
b. 1000 0000B
c. EEH
d. 0111 1111

22.. A byte corresponds to
a. 4 bits
b. 8 bits
c. 16 bits
d. 32 bits

23.A gigabyte represents
a.1 billion bytes
b. 1000 kilobytes
c. 230 bytes
d. 1024 bytes

24. A megabyte represents
a. 1 million bytes
b. 1000 kilobytes
c. 220 bytes
d. 1024 bytes

25.. A Kb corresponds to
a. 1024 bits
b. 1000 bytes
c.210 bytes
d. 210 bits

26.A parity bit is
a. used to indicate uppercase letters
b. used to detect errors
c. is the first bit in a byte
d. is the last bit in a byte

27. Which of these devices are two state.
a. lamp
b. punched card
c. magnetic tape
d. all the above

The output impedance of of a logic pulser is
a. low
b. high
c. may be low or high
d. none of above

28.The number of LED display indicators in logic probe are
a.1
b.2
c.1 or 2
d.4

29.In hexadecimal number system,A is equal to decimal number
a.10
b.11
c.17
d.18

30.Hexadecimal number F is equal to octal number
a.15
b.16
c.17
d.18

31.Hexadecimal number E is equal to binary number
a.1110
b.1101
c.1001
d.1111

32.Binary number 1101 is equal to octal number
a.15
b.16
c.17
d.14

33.Octal number 12 is equal to decimal number
a.8
b.11
c.9
d. none

34.Decimal number 10 is equal to binary number
a.1110
b.1000
c.1001
d.1010

35.Binary number 110011011001 is equal to decimal number
a.3289
b.2289
c.1289
d.289

36.1111+11111=
a.101111
b.101110
c.111111
d.011111

37.Binary multiplication 1*0=
a.1
b.0
c.10
d.11

38.110012 -100012=
a.10000
b.01000
c.00100
d.00001

39.10112*1012=
a.55
b.45
c.35
d.25

40.1110112*100012=
a.111101101
b.111101100
c.111110
d.1100110

41.4 bits is equal to
a. 1 nibble
b.1 byte
c. 2 byte
d. none of above

42. which is non-volatile memory
a. RAM
b. ROM
c. both
d. none

43. The contents of these chips are lost when the computer is switched off?
a. ROM chips
b. RAM chips
c. DRAM chips
d. none of above

44.What are responsible for storing permanent data and instructions.?
a. RAM chips
b. ROM chips
c. DRAM chips
d. none of above

45. Which parts of the computer perform arithmetic calculations?
a. ALU
b. Registers
c. Logic bus
d. none of above
  #3  
15th February 2016, 11:18 AM
Unregistered
Guest
 
Re: Delhi Metro Rail Corporation Junior Engineer Electronics previous year question p

Can you please share last year question paper of Assistant accountants Delhi Metro?
  #4  
13th September 2019, 08:19 AM
Unregistered
Guest
 
Re: Delhi Metro Rail Corporation Junior Engineer Electronics previous year question p

Hi buddy here I am searching for Delhi Metro Rail Corporation Junior Engineer Electronics previous year question paper for this exam preparation so will you plz provide me same here ??
  #5  
13th September 2019, 08:20 AM
Super Moderator
 
Join Date: Aug 2012
Re: Delhi Metro Rail Corporation Junior Engineer Electronics previous year question p

As you want here I am giving bellow Delhi Metro Rail Corporation Junior Engineer Electronics previous year question paper on your demand :

A series RLC circuit resonates at 1000 kHz. At frequency of 995 kHz, the circuit impedance is
a) Resistive b) minimum c) Inductive d) capacitive

if each stage had gain of 10dB and noise figure of 10dB, then the overall noise figure of two-stage cascade amplifier will be
a) 10 b) 1.09 c) 1.0 d) 10.9

In SIgma delta ADC, high bit accuracy is achieved by
a) Over sampling and noise shaping b) Over sampling
C) Under sampling d) None of the above

A particular current is made up of two components: alO-A dc-and a sinusoidal current of peak value of 1.414 A. The average value of the resultant current is
a)Zero b)24.14A c)1OA d)14.14A

By doubling the sampling frequency
a) Quantisation noise decreases by 3dB
b) Quantisation noise density decreases by 3dB
c) Quantisation noise increases by 3dB
d) Quantisation noise density increases by 3dB

A Pulse train with a frequency of 1MHz Is counted using a modulo 1024 ripple-counter built with J-K flip-flops. For proper operation of the counter the maximum permissible propagation delay per Flip Flop stage
a) 100 n sec b) 50 n sec c) 20 n sec d) 10 n sec

The AID converter used in a digital voltmeter could be (1) successive approximation type (2) Flash converter type (3) Dual slope converter type. The correct sequence in the increasing order of their conversion times is
a)1,2,3 b)2,1,3 c)3,2,1 d)3,1,2

The resolution of a DIA Converter is approximately OA% 61jjjcaIe range. It is
a) An 8-bit converter b) A 10-bit converter
C) A 12 bit converter d) A 16 bit converter

in a microprocessor the resister which holds the address of the next instruction to be fetched is
a) Accumulator b) Program counter
C) Stack pointer d) Instructor register

In microcomputer WAIT states are used to
a) Make the processor wait during a DMA operation
b) Make the processor wait during a power interrupt PrOCessing
c) Make the processor wait during a power Shtd
d) Interface slow peripherals to the Processor

A 4-bit synchronous Counter uses flip4lops with propagaj delay time of 25 ns each. The maximum Possible time required for change of state will be
a) 25 ns .b) 50 ns . C) 75 ns d) 100 ns

An electromagn Wave incident on a perfect Conductor is:
a) Entirely reflected b) Fully tranSmjffj
C) Partially transmjftj d) None of these

Maximum coding gain in
a) Block Codes b) Codes
c) Turbo Codes d) RS Codes

Noise figure of an amplifier depends on
a) Bandwidth b) Output power c) Power input d) None of the above

BCH code belongs to
a) Block Codes b) Codes
c) Turbo Codes d) None of the above

When a carrier is phase modulated, with an integrated modulating signal, the resultant is
a) Phase modulated signal b) Frequency modulated signal
C) Amplitude modulated signal d) QPSK modulated signal

A satellite orbiting in 600 km orbit transmits 5 GHz frequency. The Doppler shift observed at the ground station, when the satellite is over head of the station is
d) None of the
a) Zero b) Maximum c) Infinity

A communication channel disturbed by additive white Gaussian noise has a bandwidth of 4kHz and SNR of 15. The highest transmission rate that such a channel can support (in k-bits/sec) is
a)16 b)1.6 c)3.2 d)60

An inductor supplied with 50 V ac with a frequency of 10 kHz passes a current of 7.96 mA. The value ofinductor is
a) lmH b) lOmH c) lOOmH d) IH

In a capacitor, the electric charge is stored in
a) Dielectric b) Metal plates
c) Dielectric as well as metal plates d) Neither dielectric nor metal plates

Oscillator requires
a) No feedback b) Negative feedback
c) Positive feedback d) Either positive or negative

Which loss in a transformer varies significantly with load?
a) Hysteresis loss b) Eddy current loss
C) Copper loss d) Core loss

When L is doubled and C is halved, the resonance frequency of series tuned circuit becomes
a) Doubled b) Halved C) One quarter d) Unchanged

In a Series resonant circuit, with the increase in L
a) Resonant frequency will decrease
b) Bandwidth will decrease
c) Q will increase
d) AN of these


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