ECAT Pre Computer Science Chapter 18 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 18 Electronics

Try The 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 electric field lines start from

Question # 2

Improper biasing of a transistor circuit produces

Question # 3

In full wave rectification, simultaneous action is that:

Question # 4

In a transistor, collector current is controlled by

Question # 5

A diode which can turn its current ON and OFF in nono seconds is called:

Question # 6

The reverse saturation current in a PN junction diode is only due to

Question # 7

An electronic computer is basically a vast arrangement of electronic switches which are made from

Question # 8

Inverter is the name given to:

Question # 9

The number of LED'S needed to display all the digits is:

Question # 10

By placing a dielectric in between the charges, the electrostatic force between them

Question # 11

The intensity at a point due to a charge is inversely proportional to

Question # 12

An LED emits light when it is:

Question # 13

A digital system deals with quantities which has discrete values:

Question # 14

.Depletion region contains:

Question # 15

Michael Faraday is known by his work on

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ECAT Physics Chapter 18 Important MCQ's

Sr.# Question Answer
1 Origin of the electric and the gravitational forces
A. Was known in 1911 A.D.
B. Was known in 1811 A.D.
C. Was known in 1711 A.D.
D. is still unknown
2 An electronic computer is basically a vast arrangement of electronic switches which are made from
A. Resistors
B. Transistors
C. N -type crystals
D. P-Type crystals
3 If the distance between two charges is doubled, the force between them will become
A. Double
B. Half
C. Three times
D. One fourth
4 The values 1 and 0 are designated as:
A. Continuous values
B. Binary values
C. Boolean values
D. Decimal values
5 Improper biasing of a transistor circuit produces
A. Heavy loading of emitter current
B. Distortion in the output signal
C. Excessive heat at collector terminal
D. Faulty location of load line
6 In AND gate, the output is 1 if:
A. Both inputs are 0
B. Both inputs are 1
C. Only one input is 0
D. Both (A) and (B)
7 A potential barrier of 0.7 V exists across p-n junction made from:
A. Germanium
B. Silicon
C. Arsenic
D. Gallium
8 In describing function of digital systems, 1 represents:
A. Closed switch
B. True Statement
C. Lighted bulb
D. Only (B) and (C)
9 Most of the electrons in the base of an NPN transistor flow
A. Out of the base lead
B. Into the collector
C. Into the emit
D. Into the base supply
10 By placing a dielectric in between the charges, the electrostatic force between them
A. Is always reduced
B. Is always increased
C. Is not affected
D. Is increased one million times

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