DC Motors In a dc motor constant torque is produced due to End plates Commutator Pole shoes Rotor laminations End plates Commutator Pole shoes Rotor laminations ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following losses are significantly reduced by laminating the core of a D.C. generator? Hysteresis losses Windage losses Copper losses Eddy current losses Hysteresis losses Windage losses Copper losses Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They reduce sparking They have longer life They reduce armature reaction They have lower resistance They reduce sparking They have longer life They reduce armature reaction They have lower resistance ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Induction motor C. shunt motor Reluctance motor C. series motor Induction motor C. shunt motor Reluctance motor C. series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Ward-Leonard control is basically a Field divertor method Field control method Voltage control method Armature resistance control method Field divertor method Field control method Voltage control method Armature resistance control method ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Transistor Thermistor Thyristor Thyratron Transistor Thermistor Thyristor Thyratron ANSWER DOWNLOAD EXAMIANS APP
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