Electrical Engineering Questions and Answers for Competitive Exams Pdf - 2

Question: 6

Form factor is the ratio of

(A) r.m.s. value/peak value

(B) r.m.s. value/average value

(C) average value/peak value

(D) average value/r.m.s value

Question: 7

Two waves of the same frequency have opposite phase when the phase angle between them is

(A) 0°

(B) 90°

(C) 180°

(D) 360°

Question: 8

Poor power factor

(A) results in more power losses in the electrical system

(B) overloads alternators, transformers and distribution lines

(C) results in more voltage drop in the line

(D) all the above

Question: 9

For the same peak value, which of the following wave has the least mean value?

(A) half wave rectified sine wave

(B) square wave

(C) sine wave

(D) triangular wave

Question: 10

The constant of an inductive circuit

(A) increases with decrease of inductance and increase of resistance

(B) increases with decrease of inductance and decrease of resistance

(C) increases with the increase of inductance and the increase of resistance

(D) increases with increase of inductance and decrease of resistance