AC GENERATOR

AC GENERATOR

1st - 10th Grade

10 Qs

quiz-placeholder

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AC GENERATOR

AC GENERATOR

Assessment

Quiz

Physics

1st - 10th Grade

Hard

Created by

virender solanki

Used 1+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The direction of the induced current in the coil of a generator depends on the …

length of the coil.

speed of rotation of the coil.

direction of the magnetic field.

strength of the magnetic field.

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which ONE of the following combinations regarding the energy conversions in electric motors and electric generators is CORRECT?

ENERGY CONVERSION IN MOTORS: Mechanical to electrical

ENERGY CONVERSION IN GENERATORS: Electrical to mechanical

ENERGY CONVERSION IN MOTORS: Mechanical to electrical

ENERGY CONVERSION IN GENERATORS: Mechanical to electrical

ENERGY CONVERSION IN MOTORS: Electrical to mechanical

ENERGY CONVERSION IN GENERATORS: Electrical to mechanical

ENERGY CONVERSION IN MOTORS: Electrical to mechanical

ENERGY CONVERSION IN GENERATORS: Mechanical to electrical

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ONE of the following actions will NOT cause an increase in the induced emf in a coil if the coil is rotated in a uniform magnetic field?

Rotating the coil faster

Increasing the strength of the magnetic field

Increasing the number of turns of the coil

Replacing the coil with a coil of lower resistance

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ONE of the following changes may lead to an increase in the emf of an AC generator without changing its frequency?

Decrease the resistance of the coil.

Increase the area of the coil.

Increase the resistance of the coil.

Decrease the speed of rotation.

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The speed of rotation of the coils in an AC generator is increased. Which ONE of the following combinations of frequency and output voltage for the generator will occur as a result of the change?

FREQUENCY: Increases

OUTPUT VOLTAGE: Increases

FREQUENCY: No change

OUTPUT VOLTAGE: Increase

FREQUENCY: Decrease

OUTPUT VOLTAGE: Decrease

FREQUENCY: Increase

OUTPUT VOLTAGE: No change

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A DC generator operates at 80 Hz. The number of times the output voltage reaches a maximum in 1 second is ...

40

80

120

160

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of these is NOT a part of a DC Generator.
Slip rings
commutator 
brushes
stator

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