Copper brushes in D.C. machine are used________?
Correct answer
B. where low voltage and high currents are involved
Explanation
The correct answer is where low voltage and high currents are involved.
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Study 120 Electrical Engineering MCQs with correct answers and explanations.
Correct answer
B. where low voltage and high currents are involved
Explanation
The correct answer is where low voltage and high currents are involved.
Correct answer
C. using carbon brushes of superior quality
Explanation
The correct answer is using carbon brushes of superior quality.
Correct answer
C. reduce eddy current loss
Explanation
The correct answer is reduce eddy current loss.
Correct answer
B. reverse the field connections
Explanation
The correct answer is reverse the field connections.
Correct answer
C. 2E
Explanation
The correct answer is 2E.
Correct answer
A. Faraday’s law of electromagnetic induction
Explanation
The correct answer is Faraday’s law of electromagnetic induction.
Correct answer
B. lap winding
Explanation
The correct answer is lap winding.
Correct answer
D. amount of current to be collected
Explanation
The correct answer is amount of current to be collected.
Correct answer
A. rotating amplifier
Explanation
The correct answer is rotating amplifier.
Correct answer
C. there is no load on|he generator
Explanation
The correct answer is there is no load on|he generator.