ECAT Pre Computer Science Chapter 18 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 18 Electronics

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ECAT Physics Chapter 18 Electronics

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Question # 1

The value of relative permittivity of different dielectrics are

Question # 2

The number of input terminals of an op-amp is:

Question # 3

In reverse-biased p-n junction, the reverse current is due to flow of:

Question # 4

Silicon is one of the mot commonly used:

Question # 5

.Depletion region contains:

Question # 6

The electric field lines start from

Question # 7

A hole in p-type my be due to:

Question # 8

Computer chips are made from:

Question # 9

The value of LDR depends upon intensity of:

Question # 10

A digital system deals with quantities which has discrete values:

Question # 11

Electric intensity at a place due to a charged conductor is a

Question # 12

A potential barrier of 0.7 V exists across p-n junction made from:

Question # 13

A potential barrier of 0.7V exists across p-n junction made from:

Question # 14

The values 1 and 0 are designated as:

Question # 15

Truth table of logic function:

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ECAT Physics Chapter 18 Important MCQ's

Sr.# Question Answer
1 Field lines are closer to each other in the region where the filed is
A. Stronger
B. Weaker
C. Much weaker
D. Absent
2 The electric field lines start from
A. Positive charge
B. Negative charge
C. Either A or B
D. Neutron
3 In describing function of digital systems, 1 represents:
A. Closed switch
B. True Statement
C. Lighted bulb
D. Only (B) and (C)
4 The number of input terminals of an op-amp is:
A. One
B. Two
C. Three
D. Four
5 A digital system deals with quantities which has discrete values:
A. Two in number
B. One in number
C. Three in number
D. Four in number
6 Crystal of germanium or silicon in its pure form at absolute zero acts as:
A. A conductor
B. A semiconductor
C. an insulator
D. Both (A) and (C)
7 In full wave rectification, simultaneous action is that:
A. Two diodes conduct and two do not.
B. One diode conduct and three do not.
C. Three diodes conduct and one does not.
D. All the four diodes conduct
8 Silicon is one of the mot commonly used:
A. onductor
B. Dielectric
C. Insulator
D. Semiconduction
9 The use of chips in electrons is described in the form of:
A. Yellow boxes
B. Black boxes
C. Red boxes
D. White boxes
10 In reverse-biased p-n junction, the reverse current is due to flow of:
A. Minority charge carriers
B. Majority charge carriers
C. Free electrons from p to n-region
D. Holes from n to p-region

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