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 concept of electric field theory was introduced by

Question # 2

The values 1 and 0 are designated as:

Question # 3

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

Question # 4

In full wave rectification, simultaneous action is that:

Question # 5

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

Question # 6

An LED emits light when it is:

Question # 7

When transistors are used in digital circuits they usually operate in the

Question # 8

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

Question # 9

To designate the voltage as low or 0 by a logic gate, the specified minimum value is:

Question # 10

Silicon is one of the mot commonly used:

Question # 11

In describing function of digital systems, 1 represents:

Question # 12

Origin of the electric and the gravitational forces

Question # 13

All the valence electrons present in a crystal of silicon are bound in their orbits by

Question # 14

To turn the transistor OFF, the base current is set:

Question # 15

In a transistor, collector current is controlled by

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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 Silicon is one of the mot commonly used:
A. onductor
B. Dielectric
C. Insulator
D. Semiconduction
3 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
4 An LED emits light when it is:
A. Forward biased
B. Reverse biased
C. Operated without battery
D. Operated with heat source
5 .Depletion region contains:
A. Protons
B. Positive ions
C. Negative ions
D. Both (B) and (C)
6 In the forward biases situation, the current flowing across the p-n junction is a few:
A. amperes
B. Milli amperes
C. Micro amperes
D. Pico amperes
7 The SI unit of charge is
A. Ampere
B. Watt
C. Coulomb
D. Volt
8 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
9 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
10 Depletion region contains:
A. Protons
B. Positive ions
C. Negative ions
D. Both (B) and (C)

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