AC Generators

AC Generators

8th - 10th Grade

21 Qs

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AC Generators

AC Generators

Assessment

Quiz

Physics

8th - 10th Grade

Medium

Created by

Bob Baker

Used 67+ times

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21 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of these is NOT a part of a DC Generator.

Slip rings
commutator 
brushes
stator

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which is the device in DC Generators that converts AC current into DC current

brushes
commutator 
stator
armature

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The process of generating the current in a conductor is called as 

Electro motive force 
Electromagnetic induction 
generator energy conversion 
induced voltage

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

AC generators have 

2 slip rings 
1 slip ring 
3 slip rings 
4 slip rings

5.

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

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Some learners decided to build a small electrical generator in the laboratory. They then used this generator to investigate how the magnitude of the induced emf would change as the magnetic field strength changed.

Which ONE of the following is CORRECT regarding the variables for the investigation?

DEPENDENT VARIABLE: Magnitude of induced emf

INDEPENDENT VARIABLE: Number of turns of coil of generator

CONTROL VARIABLE: Magnetic field strength

DEPENDENT VARIABLE: Number of turns of coil of generator

INDEPENDENT VARIABLE: Magnitude of induced emf

CONTROL VARIABLE: Magnetic field strength

DEPENDENT VARIABLE: Magnitude of induced emf

INDEPENDENT VARIABLE: Magnetic field strength

CONTROL VARIABLE: Number of turns of coil of generator

DEPENDENT VARIABLE: Magnetic field strength

INDEPENDENT VARIABLE: Number of turns of coil of generator

CONTROL VARIABLE: Magnitude of induced emf

7.

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.

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