DC Motors Which of the following can be used for controlling the speed of a dc motor? Thyratron Thyristor Thermistor Transistor Thyratron Thyristor Thermistor Transistor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? Wide speed range High starting torque Low cost Stability Wide speed range High starting torque Low cost Stability ANSWER DOWNLOAD EXAMIANS APP
DC Motors For starting a dc motor a starter is required because It limits the starting current to a safe value It starts the motor It limits the speed of the motor None of the listed here It limits the starting current to a safe value It starts the motor It limits the speed of the motor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking Dynamic braking Regenerative Plugging None of these Dynamic braking Regenerative Plugging None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is None of the listed here inversely proportional to applied voltage Directly proportional to flux per pole inversely proportional to flux per pole None of the listed here inversely proportional to applied voltage Directly proportional to flux per pole inversely proportional to flux per pole ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will continue to run The motor will run noisy The armature may burn The motor will stop The motor will continue to run The motor will run noisy The armature may burn The motor will stop ANSWER DOWNLOAD EXAMIANS APP
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