MDCAT Physics mcq test with answers for chapter 14 (Electronics)

Question # 1

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

The positive half cycle of input AC only A
The negative half cycle of input AC B
The completes cycle of input AC only C
All of the above D

Question # 2

A circuit that converts Pulsating DC into smooth DC contain :

Filter A
Capacitor B
Inductor C
LC circuit D

Question # 3

The magnitude of potential barrier for Ge is

0.7 v A
0.3 V B
7v C
3 v D

Question # 4

A pure semiconductor has:

An infinite resistance at 0^oC) A
A finite resistance which does not depend upon temperature B
A finite resistance which decreases with temperature C
A finite resistance which increase with temperature D

Question # 5

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

Conductor A
Amplifier B
Oscillator C
Rectifier D

Question # 6

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

100,000 A
100 B
1000 C
101 D

Question # 7

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

Zero A
Infinite B
One C
100 D

Question # 8

A diode as a rectifier converts:

A)c into D)c A
D)c into A)c B
Varying D)c current into constant D)c current C
High voltage into low voltage and vice-versa D

Question # 9

The efficiency of half wave rectifier is:

25.6% A
1.2% B
40.6% C
66.6% D

Question # 10

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

Using a transistor A
Suppressing the harmonics in A.C. voltage B
Suppressing half wave of A.C. supply by using diode C
Using a Coolidge D

Question # 11

The diode charactristics curve is plot between

I & t A
V& t B
V& I C
None D

Question # 12

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

The positive half cycle of input A.C. (C) The complete cycle of input A.C. A
The negative half cycle of input A.C. B
The complete cycle of C
All of the above D

Question # 13

The diodes works on

A.C A
D.C B
both A and B C
None of these D

Question # 14

The efficiency of full wave rectifier is:

25.6% A
81.2% B
81.6% C
71.2% D

Question # 15

A diode characteristics curve is a graph plotted between;

Current and time A
Voltage and time B
Voltage and current C
Forward voltage and reverse current D

Question # 16

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

1 A
2 B
3 C
4 D

Question # 17

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

Greater A
Equal B
Smaller C
Undefined D

Question # 18

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

50 Hz A
100 Hz B
500 Hz C
zero D

Question # 19

The power output of a full wave rectifier is:

Equal to H.W.R A
Twice of H.W.R B
Half of H.W.R C
Four times of H.W.R D

Question # 20

Gain of operational amplifier is independent of;

Internal structure A
External Structure B
Batteries C
Potential changes D

Sr.#	Question	Answer
1	For full wave rectification, the minimum number of diodes used is:	A. 1 B. 2 C. 3 D. 4
2	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
3	In full wave rectification, the output D.C. voltage across the load is obtainedfor	A. The positive half cycle of input A.C. (C) The complete cycle of input A.C. B. The negative half cycle of input A.C. C. The complete cycle of D. All of the above
4	A non-conducting semiconductor diode is:	A. Forward biased B. Poorly biased C. Reverse biased D. None of them
5	The efficiency of full wave rectifier is:	A. 25.6% B. 81.2% C. 81.6% D. 71.2%
6	A pure semiconductor has:	A. An infinite resistance at 0^oC) 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
7	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
8	The diode charactristics curve is plot between	A. I & t B. V& t C. V& I D. None
9	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
10	The unit of gain (G) for non-inverting amplifier is	A. Ampere B. ohm C. Volt D. None of these

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

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

MDCAT Physics Chapter 14 Electronics MCQ's Test

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

A circuit that converts Pulsating DC into smooth DC contain :

The magnitude of potential barrier for Ge is

A pure semiconductor has:

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

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

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

A diode as a rectifier converts:

The efficiency of half wave rectifier is:

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

The diode charactristics curve is plot between

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

The diodes works on

The efficiency of full wave rectifier is:

A diode characteristics curve is a graph plotted between;

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

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

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

The power output of a full wave rectifier is:

Gain of operational amplifier is independent of;

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