Electrical Machines At slip s = 1 torque developed in machine is none. starting torque. maximum torque. electromagnetic torque. none. starting torque. maximum torque. electromagnetic torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The material used for commutator brushes is mostly copper. mica. carbon. cast iron. copper. mica. carbon. cast iron. ANSWER DOWNLOAD EXAMIANS APP
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 %. 25 %. 50 %. 10 %. 15 %. 25 %. 50 %. 10 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To increase starting torque of a 3-phase slip ring induction motor, preferred method is to increase supply voltage supply frequency rotor resistance None of these supply voltage supply frequency rotor resistance None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A differentially compound motor under high-over-load conditions will behave like a / an AC synchronous motor. cummulative compound motor. shunt motor. series motor. AC synchronous motor. cummulative compound motor. shunt motor. series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase transformer has specifications as 250 KVA, 11000 V/415 V, 50 Hz. What are the values of primary and secondary currents? primary = 602 A, secondary = 22.7 A primary = 22.7 A, secondary = 602.4 A primary = 301 A, secondary = 22.7 A primary = 11.4 A, secondary = 301 A primary = 602 A, secondary = 22.7 A primary = 22.7 A, secondary = 602.4 A primary = 301 A, secondary = 22.7 A primary = 11.4 A, secondary = 301 A ANSWER DOWNLOAD EXAMIANS APP
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