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

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

Question # 2

Silicon is one of the mot commonly used:

Question # 3

A hole in p-type my be due to:

Question # 4

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

Question # 5

The value of LDR depends upon intensity of:

Question # 6

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

Question # 7

The values 1 and 0 are designated as:

Question # 8

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

Question # 9

Michael Faraday is known by his work on

Question # 10

Computer chips are made from:

Question # 11

Inverter is the name given to:

Question # 12

Improper biasing of a transistor circuit produces

Question # 13

Conversion of A.C. into D.C. is called:

Question # 14

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

Question # 15

The reverse saturation current in a PN junction diode is only due 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 The reverse saturation current in a PN junction diode is only due to
A. Majority carriers
B. Minority Carriers
C. Acceptor ions
D. Donor ions
3 Conversion of A.C. into D.C. is called:
A. Reftification
B. Amplification
C. Electric induction
D. Magnetic induction
4 The concept of electric field theory was introduced by
A. Michael Faraday
B. Newton
C. Dalton
D. Kepler
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 Field lines are closer to each other in the region where the filed is
A. Stronger
B. Weaker
C. Much weaker
D. Absent
8 An LED emits light when it is:
A. Forward biased
B. Reverse biased
C. Operated without battery
D. Operated with heat source
9 The electric field lines start from
A. Positive charge
B. Negative charge
C. Either A or B
D. Neutron
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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