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3.12 DC Motor Generator

Authored by Rajendra Singh Chundawat

Engineering

Vocational training

Used 67+ times

3.12 DC Motor Generator
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40 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What factor primarily determines the strength of the voltage induced in the conductor of a generator?

The length of the conductor
The speed of the conductor's movement within the magnetic field
The thickness of the conductor

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the loop in a simple generator is parallel to the magnetic lines of force, why is the induced voltage zero?

The loop is cutting the lines of force at maximum rate
The loop is not cutting any magnetic lines of force
The magnetic field cancels out the voltage

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does armature reaction affect the brush position on the commutator?

It causes the brushes to wear out faster
It shifts the main field poles without a corresponding shift in brush positions
It stabilizes the brush positions

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the output voltage of a DC generator as the number of loops in the rotor is increased?

The variation between maximum and minimum voltage values is reduced
The output voltage varies more widely
The output voltage becomes more unstable

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does armature reaction change with increasing generator load?

Armature reaction decreases
Armature reaction remains constant
Armature reaction increases

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one potential effect of armature reaction that directly impacts the commutator?

Brush sparking on the commutator
Increased commutator wear
Enhanced commutator efficiency

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do DC generators require a control circuit?

To ensure the generator maintains the correct voltage and current
To control the rotational speed of the armature
To monitor the temperature of the generator

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