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

In a half wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be:

Question # 2

The magnitude of potential barrier for Ge is

Question # 3

A pure semiconductor has:

Question # 4

The diode charactristics curve is plot between

Question # 5

A PN junction diode cannot be use:

Question # 6

A diode characteristics curve is a graph plotted between;

Question # 7

The diodes works on

Question # 8

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

Question # 9

A non-conducting semiconductor diode is:

Question # 10

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

Question # 11

A pulsating DC can be converted into constant voltage by using

Question # 12

In a full wave rectifier, the diode conducts during

Question # 13

A device which convert DC into AC is calleD)

Question # 14

The efficiency of full wave rectifier is:

Question # 15

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

Question # 16

A circuit that converts Pulsating DC into smooth DC contain :

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

The junction potential for Germanium is;

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MCAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The junction potential for Germanium is;
A. 3v
B. 0.3 v
C. 7v
D. 0.7 v
2 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
3 For a normal AC cycle, during T/2 to T the diode act as:
A. Open switch
B. full wave rectifier
C. Close switch
D. All are correct
4 The magnitude of potential barrier for Ge is
A. 0.7 v
B. 0.3 V
C. 7v
D. 3 v
5 In full wave rectification by bridge the number of diodes required are
A. 3
B. 4
C. 2
D. 5
6 For full wave rectification, the minimum number of diodes used is:
A. 1
B. 2
C. 3
D. 4
7 In a full wave rectifier:
A. DC current is twice that of half wave rectifier
B. DC pulses are twice per cycle that of half wave rectifier
C. DC voltage is twice that of half wave rectifier
D. All are correct
8 A PN junction diode cannot be use:
A. As rectifier
B. For converting light energy to electrical energy
C. For getting light radiation
D. For increasing the amplitude of an ac signal
9 A pulsating DC can be converted into constant voltage by using
A. Filter
B. Full wave rectifier
C. Half wave rectifie
D. Bridge rectifier
10 The efficiency of half wave rectifier is:
A. 25.6%
B. 1.2%
C. 40.6%
D. 66.6%

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