AC GENERATOR
Authored by virender solanki
Physics
1st - 10th Grade
Used 1+ times
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10 questions
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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.
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