Question # 1

A diode characteristics curve is a graph plotted between;

Choose an answer

Current and time

Voltage and time

Voltage and current

Forward voltage and reverse current

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

Choose an answer

Open switch

full wave rectifier

Close switch

All are correct

In a full wave rectifier, the diode conducts during

Choose an answer

Both halves of the input cycle

A portion of the positive half cycle of the input

Positive half cycle of the input

Both halves of the input cycle

A non-conducting semiconductor diode is:

Choose an answer

Forward biased

Poorly biased

Reverse biased

None of them

The junction potential for Germanium is;

Choose an answer

3v

0.3 v

7v

0.7 v

A pulsating DC can be converted into constant voltage by using

Choose an answer

Filter

Full wave rectifier

Half wave rectifie

Bridge rectifier

Inverting amplifier circuits have

Choose an answer

A very high input impendance

A very low input impendance

A low output impendance

Both A and C

A diode as a rectifier converts:

Choose an answer

A)c into D)c

D)c into A)c

Varying D)c current into constant D)c current

High voltage into low voltage and vice-versa

A device which convert DC into AC is calleD)

Choose an answer

Invertor

Generator

Rectifier

Motor

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

Choose an answer

Using a transistor

Suppressing the harmonics in A.C. voltage

Suppressing half wave of A.C. supply by using diode

Using a Coolidge

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

Choose an answer

Ampere

ohm

Volt

None of these

The efficiency of half wave rectifier is:

Choose an answer

25.6%

1.2%

40.6%

66.6%

The efficiency of full wave rectifier is:

Choose an answer

25.6%

81.2%

81.6%

71.2%

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

Choose an answer

100,000

100

1000

101

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

Choose an answer

3

4

2

5

A circuit that converts Pulsating DC into smooth DC contain :

Choose an answer

Filter

Capacitor

Inductor

LC circuit

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

Choose an answer

Conductor

Amplifier

Oscillator

Rectifier

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

Choose an answer

Zero

Infinite

One

100

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

Choose an answer

1

2

3

4

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

Choose an answer

25 Hz

70.7 Hz

50 Hz

100 Hz

More Classes

Other Links

MDCAT Physics Chapter 10 Electronics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer