Three Phase Induction Motors The efficiency of an induction motor can be expected to be nearly 99% 80 to 90% 60 to 90% 95 to 98 % 99% 80 to 90% 60 to 90% 95 to 98 % ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors DOL starting of induction motors is usually restricted to Low horsepower motors Variable speed motors High speed motors High horsepower motors Low horsepower motors Variable speed motors High speed motors High horsepower motors ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In an induction motor, the ratio of rotor cu loss and rotor input is given by 1-S S S/1-S 1/S 1-S S S/1-S 1/S ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A wound rotor motor is mainly used in applications where ______ Speed control is required Less costly motor is not required High starting torque is required High rotor resistance is required during running Speed control is required Less costly motor is not required High starting torque is required High rotor resistance is required during running ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The rotor of an induction motor runs at Synchronous speed Above synchronous speed Below synchronous speed Any of the above Synchronous speed Above synchronous speed Below synchronous speed Any of the above ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The torque developed in the cage induction motor with auto-starter is K2 × torque with direct switching k2/torque with direct switching k/torque with direct switching K × torque with direct switching K2 × torque with direct switching k2/torque with direct switching k/torque with direct switching K × torque with direct switching ANSWER DOWNLOAD EXAMIANS APP
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