Basic Electrical Engineering Questions and Answers
Q1.
If either the inductance or the rate of change of current is doubled, the induced e.m.f?
Answer:
Doubles
Q2.
In a pure inductive circuit, the power factor is __________
Answer:
0
Q3.
The rms value is 0.707 times the _________ value.
Answer:
Peak
Q4.
For multiplication and division of phasors, we use ____________ form.
Answer:
Polar
Q5.
For a direct current, the rms voltage is ________ the mean voltage.
Answer:
Equal to
Q6.
What is the effective value of current?
Answer:
RMS current
Q7.
When is the shape of the negative half of the emf waveform equal to the positive half?
Answer:
When conductors move past both north and south pole
Q8.
The repetition of a variable quantity, recurring at equal intervals, is known as ___________
Answer:
Cycle
Q9.
In an A.C. generator, increase in number of turns in the coil _________
Answer:
Increases emf
Q10.
When is tanφ positive?
Answer:
When inductive reactance is greater than capacitive reactance
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