Electrical Machines The efficiency of a transformer is mainly dependent on core losses. dielectric losses. stray losses. copper losses. core losses. dielectric losses. stray losses. copper losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the necessity of copper brushes in a dc motors? To absorb the mechanical shocks produced during running condition. To increase the flux cutting by the rotor. None of these. To convert alternating supply current to direct current. To absorb the mechanical shocks produced during running condition. To increase the flux cutting by the rotor. None of these. To convert alternating supply current to direct current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A Shunt generator running at 1000 rpm has generated emf of 100 V. If the speed increases to 1200 rpm, the generated emf will be nearly 120 V 240 V 175 V 140 V 120 V 240 V 175 V 140 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Use of fractional pitch winding make it stiffer. results in reduced axial length of the machine. All of these results in reduced leakage reactance. make it stiffer. results in reduced axial length of the machine. All of these results in reduced leakage reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous condensers are used to improve starting torque reduce hunting All of these improve the power factor improve starting torque reduce hunting All of these improve the power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase power factor. starting torque. cost of operation. breaking torque. power factor. starting torque. cost of operation. breaking torque. ANSWER DOWNLOAD EXAMIANS APP
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