Electrical Machines In a 3 - Φ IM in order to eliminate cogging the number of stator slots must be either (B) or (C). unequal to number of rotor slots and skewed in shape. equal to number of rotor slots. an integral multiple of number of rotor slots. either (B) or (C). unequal to number of rotor slots and skewed in shape. equal to number of rotor slots. an integral multiple of number of rotor slots. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Drop in speed from no load to full load is very high in Series motor with interpoles. Cummulative compound motor with interpoles. Shunt motor with interpoles. Series motor without interpoles. Series motor with interpoles. Cummulative compound motor with interpoles. Shunt motor with interpoles. Series motor without interpoles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be PN/2. PN/120. PN/60. PN/3000. PN/2. PN/120. PN/60. PN/3000. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? High. Same as full load. Low. Equal to 1. High. Same as full load. Low. Equal to 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor of a 3 phase induction motor is blocked then the slip is 0.54. 0.7. 0.3. 1. 0.54. 0.7. 0.3. 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC motor are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor ? 15.30%. 18.25%. 14.28%. 16.67%. 15.30%. 18.25%. 14.28%. 16.67%. ANSWER DOWNLOAD EXAMIANS APP
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