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 values 1 and 0 are designated as:

Question # 2

Op-amp has been discussed as comparator of:

Question # 3

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

Question # 4

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

Question # 5

The number of input terminals of an op-amp is:

Question # 6

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

Question # 7

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

Question # 8

Depletion region contains:

Question # 9

In full wave rectification, simultaneous action is that:

Question # 10

Improper biasing of a transistor circuit produces

Question # 11

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

Question # 12

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

Question # 13

A potential barrier of 0.7 V exists across p-n junction made from:

Question # 14

The electric field lines start from

Question # 15

In describing function of digital systems, 1 represents:

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ECAT Physics Chapter 18 Important MCQ's

Sr.# Question Answer
1 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
2 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)
3 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
4 The value of relative permittivity of different dielectrics are
A. Equal
B. Different
C. Greater than one
D. Smaller than one
5 A hole in p-type my be due to:
A. Trivalent impurity
B. Breking of some covalent bond
C. Pentavalent impurity
D. Germanium
6 All the valence electrons present in a crystal of silicon are bound in their orbits by
A. Ionic bond
B. covalent bond
C. Molecular bond
D. Both (A) and (B)
7 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
8 The use of chips in electrons is described in the form of:
A. Yellow boxes
B. Black boxes
C. Red boxes
D. White boxes
9 In reverse-biased p-n junction, the reverse current is due to flow of:
A. Minority charge carriers
B. Majority charge carriers
C. Free electrons from p to n-region
D. Holes from n to p-region
10 Inverter is the name given to:
A. NOT gate
B. OR gate
C. NOR gate
D. AND gate

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