- (A) its power factor may be varied at will
- (B) its speed is independent of supply frequency
- (C) its speed may be controlled more easily
- (D) none of the above
Exam preparation MCQs with answers
Practice Pakistan's most useful MCQs for competitive exams
Prepare for NTS, PPSC, FPSC and subject-wise tests with fresh multiple choice questions, clear options and quick answer reveal.
Latest MCQs
- (A) synchronizing
- (B) obtuse
- (C) torque
- (D) power factor
- (A) direct current
- (B) alternating current
- (C) no current
- (D) all of the above
- (A) voltage booster
- (B) phase advancer
- (C) noise generator
- (D) mechanical synchronizer
- (A) no change of power factor
- (B) lagging power factor with over-excitation
- (C) leading power factor with under-excitation
- (D) leading power factor with over-excitation
- (A) 45°
- (B) 60°
- (C) 90°
- (D) 120°
- (A) has large values for low excitation i niy
- (B) has large values for high excitation only
- (C) has large values for low and high excitation
- (D) any of the above
- (A) one hour
- (B) one minute
- (C) one second
- (D) none of the above
- (A) slip torque
- (B) pull-out torque
- (C) breaking torque
- (D) synchronising torque
- (A) D.C. series motor
- (B) synchronous motor
- (C) Squirrel cage induction motor
- (D) Wound round induction motor
