Three Phase Induction Motors An induction motor is preferred to a dc motor because it _______ Provides high starting torque None of the listed here Has simple and rugged construction Provides fine speed control Provides high starting torque None of the listed here Has simple and rugged construction Provides fine speed control ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The injected e.m.f. in the rotor of induction motor must have The same frequency as the slip frequency High value for the satisfactory speed control Zero frequency The same phase as the rotor e.m.f. The same frequency as the slip frequency High value for the satisfactory speed control Zero frequency The same phase as the rotor e.m.f. ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors A 3 phase induction motor is running at 2% slip. If the input to rotor is 1000 W, then mechanical power developed by the motor is _______ 20 W 980 W 500 W 200 W 20 W 980 W 500 W 200 W ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors In a squirrel cage induction motor, the number of stator slots is _______ rotor slots. Always greater than the number of Always less than the number of Always eqaul to the number of Either more or less than the number of Always greater than the number of Always less than the number of Always eqaul to the number of Either more or less than the number of ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Reduced voltage starter can be used with None of these Slip ring motor only but not with squirrel cage induction motor Squirrel cage as well as slip ring induction motor Squirrel cage induction motor only but not with slip ring motor None of these Slip ring motor only but not with squirrel cage induction motor Squirrel cage as well as slip ring induction motor Squirrel cage induction motor only but not with slip ring motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors Slip rings are usually made of Phospor bronze Copper Carbon Aluminium Phospor bronze Copper Carbon Aluminium ANSWER DOWNLOAD EXAMIANS APP
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