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 full wave rectifier, the diode conducts during

Question # 2

Inverting amplifier circuits have

Question # 3

The power output of a full wave rectifier is:

Question # 4

A circuit that converts Pulsating DC into smooth DC contain :

Question # 5

The efficiency of half wave rectifier is:

Question # 6

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

Question # 7

A pure semiconductor has:

Question # 8

The diodes works on

Question # 9

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

Question # 10

A diode characteristics curve is a graph plotted between;

Question # 11

A diode as a rectifier converts:

Question # 12

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

Question # 13

A non-conducting semiconductor diode is:

Question # 14

The magnitude of potential barrier for Ge is

Question # 15

A pulsating DC can be converted into constant voltage by using

Question # 16

In a full wave rectifier with input frequency 50Hz. The frequency of pulsating D)C) received as an output across the load is

Question # 17

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

Question # 18

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

Question # 19

For the same value of resistors the output of non-inverting amplifier compared to the output of inverting amplifier is, (ignoring phase difference)

Question # 20

In full wave rectification, the output DC voltage across the load is obtained for.

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Sr.# Question Answer
1 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
2 A device which convert DC into AC is calleD)
A. Invertor
B. Generator
C. Rectifier
D. Motor
3 A circuit that converts Pulsating DC into smooth DC contain :
A. Filter
B. Capacitor
C. Inductor
D. LC circuit
4 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
5 For full wave rectification, the minimum number of diodes used is:
A. 1
B. 2
C. 3
D. 4
6 In full wave rectification by bridge the number of diodes required are
A. 3
B. 4
C. 2
D. 5
7 The magnitude of potential barrier for Ge is
A. 0.7 v
B. 0.3 V
C. 7v
D. 3 v
8 The efficiency of full wave rectifier is:
A. 25.6%
B. 81.2%
C. 81.6%
D. 71.2%
9 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
10 A non-inverting amplifier has infinite input resistance then the voltage gain of noninverting amplifier will be:
A. Zero
B. Infinite
C. One
D. 100
11 In a half wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be:
A. 25 Hz
B. 70.7 Hz
C. 50 Hz
D. 100 Hz
12 The junction potential for Germanium is;
A. 3v
B. 0.3 v
C. 7v
D. 0.7 v
13 The unit of gain (G) for non-inverting amplifier is
A. Ampere
B. ohm
C. Volt
D. None of these
14 The power output of a full wave rectifier is:
A. Equal to H.W.R
B. Twice of H.W.R
C. Half of H.W.R
D. Four times of H.W.R

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