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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

In a transistor, collector current is controlled by

Question # 6

The concept of electric field theory was introduced by

Question # 7

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

Question # 8

If both the inputs given to a gate ae 1 such that the output is 0, then it is:

Question # 9

The values 1 and 0 are designated as:

Question # 10

In AND gate, the output is 1 if:

Question # 11

In an N-type silicon, which of the following statement is true

Question # 12

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

Question # 13

Electric lines of force

Question # 14

The SI unit of charge is

Question # 15

The electric field lines start from

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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 Op-amp has been discussed as comparator of:
A. Distances
B. Voltages
C. Velocities
D. Magnetic fields
4 Electric intensity at a place due to a charged conductor is a
A. Scalar quantity
B. Vector quantity
C. Semi vector and semi scalar
D. Dimensionless quantity
5 To make an LED, it is impreacticable to use:
A. Silicon
B. Gallium arsenide
C. Gallium arsenide phosphide
D. Iron
6 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
7 The values 1 and 0 are designated as:
A. Continuous values
B. Binary values
C. Boolean values
D. Decimal values
8 A transistor has:
A. One region
B. Two regions
C. Three regions
D. Four regions
9 A potential barrier of 0.7 V exists across p-n junction made from:
A. Germanium
B. Silicon
C. Arsenic
D. Gallium
10 A hole in p-type my be due to:
A. Trivalent impurity
B. Breking of some covalent bond
C. Pentavalent impurity
D. Germanium

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