Single-Phase Rectifiers Quiz

Single-Phase Rectifiers Quiz

University

20 Qs

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Single-Phase Rectifiers Quiz

Single-Phase Rectifiers Quiz

Assessment

Quiz

Other

University

Practice Problem

Hard

Created by

vinod kumar

Used 1+ times

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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a single-phase half-wave controlled rectifier, the thyristor is turned on during:

Positive half cycle

Negative half cycle

Both half cycles

When voltage is zero

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The main function of a single-phase thyristor-controlled rectifier is to:

Invert DC to AC

Convert DC to DC

Convert AC to controlled DC

Step-up AC voltage

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The delay angle (α) in a thyristor rectifier is defined as the angle at which:

Thyristor is off

Thyristor is triggered

Load current is zero

Thyristor is in reverse bias

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For a single-phase half-wave controlled rectifier with RL load, if the firing angle (α) is increased, the output DC voltage:

Increases

Decreases

Remains constant

Is unaffected by α

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The average output voltage in a single-phase fully controlled rectifier with a resistive load is given by:

Vmsin(α)

Vmcos(α)

(Vm/π)(1+cos(α))

(Vm/π)(1−cos(α))

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a single-phase half-wave controlled rectifier, the average DC output voltage can be controlled by:

Changing load resistance

Changing firing angle of the thyristor

Changing the input frequency

Adding capacitors

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a single-phase full-wave controlled rectifier with RL load, the output waveform typically contains:

Only DC

DC and fundamental frequency AC

High-frequency AC only

Pure AC

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