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

Question # 2

Most of the electrons in the base of an NPN transistor flow

Question # 3

A hole in p-type my be due to:

Question # 4

If the distance between two charges is doubled, the force between them will become

Question # 5

Crystal of germanium or silicon in its pure form at absolute zero acts as:

Question # 6

Field lines are closer to each other in the region where the filed is

Question # 7

To display a digit of EIGHT, the number of ON LED'S are:

Question # 8

In a transistor, collector current is controlled by

Question # 9

Origin of the electric and the gravitational forces

Question # 10

Electric field strength is defined as

Question # 11

The use of chips in electrons is described in the form of:

Question # 12

In the forward biases situation, the current flowing across the p-n junction is a few:

Question # 13

Op-amp has been discussed as comparator of:

Question # 14

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

Question # 15

Inverter is the name given to:

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ECAT Physics Chapter 18 Important MCQ's

Sr.# Question Answer
1 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
2 In the text book, the transistor amplifier circuit is a:
A. Common emitter circuit
B. Common collector circuit
C. Common base circuit
D. Any of these
3 The electric field lines start from
A. Positive charge
B. Negative charge
C. Either A or B
D. Neutron
4 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)
5 To make an LED, it is impreacticable to use:
A. Silicon
B. Gallium arsenide
C. Gallium arsenide phosphide
D. Iron
6 Inverter is the name given to:
A. NOT gate
B. OR gate
C. NOR gate
D. AND gate
7 Silicon is one of the mot commonly used:
A. onductor
B. Dielectric
C. Insulator
D. Semiconduction
8 Michael Faraday is known by his work on
A. Nuclear strong force
B. Gravitational force
C. Nuclear weak force
D. Electric force
9 A hole in p-type my be due to:
A. Trivalent impurity
B. Breking of some covalent bond
C. Pentavalent impurity
D. Germanium
10 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

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