01)__________
contains the data which needs to be written or read out of a particular address
location.
a.MAR
b.MBR
c.ALU
d.PC
Answer: B
02)A ________ is
used for joining several files into one large object file.
a.Linker
b.Locator
c.Compiler
d.Assembler
Answer: A
03)The clock rate
is _______________ of the clock cycle.
a.square
b.inverse
c.double
d.triple
Answer: B
04)The execution
time ________________, if clock rates are high.
a.Decreases
b.Increases
c.Doubles
d.Triples
Answer: A
05)_____________ is
used to move data between computer and external device.
a.CPU
b.I/O device
c.Main memory
d.System
interconnection
Answer: B
06)Electrostatic
discharge (ESD) is created due to imbalance of _______________.
a.Protons
b.Atoms
c.Electrons
d.Neutrons
Answer: C
07)The voltage of
each of the circuit in power supply can be measured using a __________________.
a.Ammeter
b.Multimeter
c.Voltmeter
d.Rectifier
Answer: B
08)A ______________
is a device, which helps in converting the DC current to AC current.
a.Inverter
b.Rectifier
c.Push-pull
converter
d.Multimeter
Answer: A
09)________________
is a device, which helps in optimizing the quality of power supply.
a.Uninterruptible
Power Supply
b.Power
conditioner
c.Inverter
d.Rectifier
Answer: B
10)___________________
is a safety feature that provides the protection against various dangerous
electrical situations.
a.Cable management
equipment
b.Emergency
Power-Off switch
c.Fire-Fighting
Equipment with an Electrical Rating
d.Lightning
Protection
Answer: B
11)A relative humidity
should be between ________________ in the environment.
a.20-40%
b.40-60%
c.60-80%
d.80-100%
Answer: B
12)
Hexadecimal
no. system has a base of
a. 2
b. 16
c. 10
d. 8
Ans: - b
13)
Which
of the following is a saturated bipolar logic circuit? (Multiple choice)
a. DCTL
b. PMOS
c. DTL
d. ECL
Ans: - a, c
14)
Which
of the following is not a bipolar logic circuit?
a. CMOS
b. TTL
c. I2L
d. RTL
Ans: - a
15)
Which
bipolar circuits are non-saturating?
a. CMOS
b. DCTL
c. HTL
d. Schottky TTL
Ans: - d
16)
________
is MOS logic family (Multiple
choice)
a. DMOS
b. CMOS
c. QMOS
d. PMOS
Ans: - b, d
17)
(111000110101)2
= ( )8
a. 7065
b. 7056
c. 7506
d. 7560
Ans: -a
18)
The
decimal number 91 in BCD is:
a. 0101 0001
b. 1000 0001
c. 1001 0001
d. 1101 0001
Ans:-c
19)
The
BCD number 1000 1001 0101 in decimal is:
a. 902
b. 895
c. 875
d. 796
Ans: - b
20)
(B3F)16 = (
)8
a. 2366
b. 4476
c. 5477
d. 2332
Ans: - c
21)
(100111010)2
= ( )16
a. 13A
b. 21B
c. 9D0
d. 23C
Ans: - a
22)
(1101.001)2
= ( )10
a. 11.625
b. 11.125
c. 13.625
d. 13.125
Ans: - d
23)
BCD
stands for ______________________________
a. Binary Coded Decimal
b. Binary Coded Data
c. Binary Converted Data
d. None of them
Ans: - a
24)
The
property of ASCII code is _________. (Multiple
choice)
a. 7- bit code
b. 128 combinations
c. 8- bit code
d. all the above
Ans: - a, b
25)
ASCII
stands for
a. African Standard Code for Information
Interchange
b. American Standard Code for Interchange
Information
c. African Standard Code for Information
Interless
d. American Standard Code for Information
Interchange
Ans: - d
26)
In
which gate, when both i/ps are same, o/p is zero.
a. NAND
b. EX-OR
c. NOR
d. AND
Ans: - b
27)
IC no.
for NOT gate is
a. 7400
b. 7404
c. 7486
d. 7402
Ans: - b
28)
EX- OR
gate is also called as _________.
a. Inverter
b. Equality detector
c. Inequality detector
d. Regulator
Ans: - c
29)
What
logic symbol is shown in adjacent fig
a. EX –OR
b. OR
c. NOR
d. NAND
Ans: a
30)
In
case of Full Adder, the circuit adds _____ bits at a time.
a. 1
b. 3
c. 2
d. 4
Ans: - b
31)
When A
= zero and B = one; the borrow is _____ and the difference is ______.
a. 0, 0
b. 0, 1
c. 1, 0
d. 1, 1
Ans: - d
32)
Half-
adder circuit includes _________ gates (Multiple
choice)
a. EX-OR
b. AND
c. OR
d. NOT
Ans: - a, b
33)
The
sum of Half Adder is the O/p of _____________
a. OR Gate
b. AND Gate
c. Ex-OR Gate
d. None of them.
Ans: - c
34)
Half-
Subtractor circuit include _________ gates (Multiple
choice)
a. EX-OR
b. AND
c. OR
d. NOT
Ans:-a, b, d
35)
A+1=?
a. Compliment of A
b. 1
c. 0
d. A
Ans: - b
36)
A . A
=?
a. 1
b. 0
c. Compliment of A
d. A
Ans: - d
37)
A+A=?
a. A
b. Compliment of A
c. 1
d. 0
Ans: - a
38)
“Complement
of the sum is equal to the product of the complement”. Identify the name of the
theorem.
a. De – Morgan’s Theorem
b. Duality theorem
c. Commutative Law
d. None of the above
Ans: - a
39)
The
difference of Half Subtractor is the O/p of _____________
a. OR Gate
b. AND Gate
c. Ex-OR Gate
d. None of them
Ans: - c
40)
The IC
number of multiplexer is __________.
a. 74150
b. 74147
c. 7432
d. 7400
Ans: - a
41)
The IC
74154 is used for _______ (Multiple
choice)
a. Demultiplexer
b. Encoder
c. Decoder
d. Multiplexer
Ans: - a, c
42)
The IC
no. D flip-flop is
a. 7404
b. 7476
c. 7474
d.
None
of them
Ans: - c
43)
IC 555
can be used in (Multiple
choice)
a. Monostable mode
b.
Astable
Mode
c. Bistable mode
d. None of them
Ans: - a, b
44)
Comparator
2 in 555 IC uses ______ volts.
a. 2/3Vcc
b. 1/3Vcc
c. 5V
d. 10V
Ans: - b
45)
The
discharging time T2, for astable multivibrator is _______________
a. 0.7C RB
b. 0.7C (RA + RB)
c. 0.7C (RA + 2 RB)
d. None of them
Ans: - a
46)
In
delay Flip- Flop Q = 1 , when D = ____
and Q = 0 when D = ____
a. 0, 0
b. 1, 0
c. 0, 1
d. 1, 1
Ans: - b
47) Duty cycle can be made 50% by connecting
_______ devices across resistor RB.
a. Capacitor
b. Diode
c. Transistor
d. Resistor
Ans: - b
48)
The IC
no. JK flip-flop is
a. 7404
b. 7476
c. 7474
d. None of them
Ans: - b
49)
The
application of IC 555 are (Multiple
choice)
a. Multivibrator
b. Gate
c. Oscillator
d. Timer
Ans: - a, d
50)
Comparator
1 in 555 IC uses ______ volts.
a. 2/3Vcc
b. 1/3Vcc
c. 5V
d. 10V
Ans: - a