Electrical Machines The rotor of a three phase induction motor has an impedance of 0.4 + j4 ohm per phase at standstill the maximum torque occurs at a slip of _____________. 15 %. 10 %. 25 %. 50 %. 15 %. 10 %. 25 %. 50 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are slot wedges in a DC machine made of? Mild steel. Fibre. Cast iron. Silicon steel. Mild steel. Fibre. Cast iron. Silicon steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The short circuit test on a transformer is conducted to obtain copper losses. hysteresis loss. core loses only. eddy current loss. copper losses. hysteresis loss. core loses only. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor is used in paper machines? DC series motor. Separately excited DC motor. DC compound motor. DC Shunt motor. DC series motor. Separately excited DC motor. DC compound motor. DC Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has almost constant speed over their full load range? Shunt. Compound (cummolative). Series. none of these. Shunt. Compound (cummolative). Series. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum starting torque is obtained, rotor power is ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS