MDCAT Physics Chapter 14 MCQ Test With Answer for (Electronics)

MCQ's Test For MDCAT Physics Chapter 14 Electronics MCQ's Test

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MDCAT Physics Chapter 14 Electronics MCQ's Test

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Question # 1

The diodes works on

Question # 2

The efficiency of full wave rectifier is:

Question # 3

A diode as a rectifier converts:

Question # 4

Gain of operational amplifier is independent of;

Question # 5

A non-conducting semiconductor diode is:

Question # 6

The simplest type of rectification known as half wave rectification is obtained by

Question # 7

In full wave rectification, the output D.C. voltage across the load is obtainedfor

Question # 8

A pulsating DC can be converted into constant voltage by using

Question # 9

The resistance of operational amplifier between inverting and non-inverting terminal is of the order of:

Question # 10

For full wave rectification, the minimum number of diodes used is:

Question # 11

The unit of gain (G) for non-inverting amplifier is

Question # 12

The junction potential for Germanium is;

Question # 13

A certain noninverting amplifier has R1 of 1 kΩ and R2 of 100 kΩ. The closed-loop voltage gain is ………

Question # 14

The diode charactristics curve is plot between

Question # 15

A non-inverting amplifier has infinite input resistance then the voltage gain of noninverting amplifier will be:

Question # 16

When two semiconductors of p- and n-type are brought into contact, they from a p-n junction which act like a:

Question # 17

In a full wave rectifier, the diode conducts during

Question # 18

The method by which only one half of A.C cycle is converted into direct current is called

Question # 19

In full wave rectification by bridge the number of diodes required are

Question # 20

For a normal AC cycle, during T/2 to T the diode act as:

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MCAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A diode as a rectifier converts:
A. A)c into D)c
B. D)c into A)c
C. Varying D)c current into constant D)c current
D. High voltage into low voltage and vice-versa
2 The junction potential for Germanium is;
A. 3v
B. 0.3 v
C. 7v
D. 0.7 v
3 Gain of operational amplifier is independent of;
A. Internal structure
B. External Structure
C. Batteries
D. Potential changes
4 A circuit that converts Pulsating DC into smooth DC contain :
A. Filter
B. Capacitor
C. Inductor
D. LC circuit
5 A certain noninverting amplifier has R1 of 1 kΩ and R2 of 100 kΩ. The closed-loop voltage gain is ………
A. 100,000
B. 100
C. 1000
D. 101
6 The efficiency of full wave rectifier is:
A. 25.6%
B. 81.2%
C. 81.6%
D. 71.2%
7 A pure semiconductor has:
A. An infinite resistance at 0oC)
B. A finite resistance which does not depend upon temperature
C. A finite resistance which decreases with temperature
D. A finite resistance which increase with temperature
8 The method by which only one half of A.C cycle is converted into direct current is called
A. half wave amplification
B. half wave rectification
C. Full wave rectification
D. full wave amplification
9 For the same value of resistors the output of non-inverting amplifier compared to the output of inverting amplifier is, (ignoring phase difference)
A. Greater
B. Equal
C. Smaller
D. Undefined
10 In full wave rectification by bridge the number of diodes required are
A. 3
B. 4
C. 2
D. 5

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