DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 1.0 0.5 4.0 2.0 1.0 0.5 4.0 2.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is inversely proportional to applied voltage inversely proportional to flux per pole Directly proportional to flux per pole None of the listed here inversely proportional to applied voltage inversely proportional to flux per pole Directly proportional to flux per pole None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the speed of a dc shunt motor is increased the back emf of the motor will Become zero Increase Remains same Decrease Become zero Increase Remains same Decrease ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor if the back emf is absent Motor will burn Motor will run at very slow speed Motor will run at very high speed Motor will not run at all Motor will burn Motor will run at very slow speed Motor will run at very high speed Motor will not run at all ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to 10% of the previous value 50% of the previous value 100% of the previous value 25% of the previous value 10% of the previous value 50% of the previous value 100% of the previous value 25% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thyratron Transistor Thermistor Thyristor Thyratron Transistor Thermistor Thyristor ANSWER DOWNLOAD EXAMIANS APP