Electrical Machines In a DC Shunt Motor if the load current increases then field flux decreases remains constant. increases. decreases. decreases remains constant. increases. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The low voltage winding of a 400/230 V single phase 50 Hz transformer is to be connected to keep the magnetization current at the same level in both the cases the voltage at 25 Hz should be 115 V 65 V 460 V 230 V 115 V 65 V 460 V 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The starting resistance of DC motor is generally 1000 ohms. Infinitely large. Low. around 500 ohms. 1000 ohms. Infinitely large. Low. around 500 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Torque angle of a synchorous machine operating from a constant voltage bus is usually defined as the space angle between Stator mmf wave and resultant mmf wave. Stator mmf wave and resultant flux density. Rotor mmf wave and stator mmf wave. Rotor mmf wave and resultant flux density wave. Stator mmf wave and resultant mmf wave. Stator mmf wave and resultant flux density. Rotor mmf wave and stator mmf wave. Rotor mmf wave and resultant flux density wave. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous motor can be started by coupling it with a small AC induction motor called the pony motor. providing damper winding in its rotor circuit. any of the above methods. coupling it with a DC compound motor. coupling it with a small AC induction motor called the pony motor. providing damper winding in its rotor circuit. any of the above methods. coupling it with a DC compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a loaded DC generator, if the brushes are given a shift from the interpolar axis in the direction of rotation, then the commutation will deteriorate with rise in terminal voltage. deteriorate with fall of terminal voltage. improve with rise in terminal voltage. improve with fall of terminal voltage. deteriorate with rise in terminal voltage. deteriorate with fall of terminal voltage. improve with rise in terminal voltage. improve with fall of terminal voltage. ANSWER DOWNLOAD EXAMIANS APP
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