Electrical Machines which of the following losses are negligible in blocked rotor test? copper loss iron loss both A and B mechanical loss copper loss iron loss both A and B mechanical loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Regenerative braking is possible in DC shunt motor with field weakening control. DC compound motor. DC series motor. DC shunt motor with armature resistance control. DC shunt motor with field weakening control. DC compound motor. DC series motor. DC shunt motor with armature resistance control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotating magnetic field of 8 pole 50 Hz induction motor is 3000 rpm 1500 rpm 750 rpm 1000 rpm 3000 rpm 1500 rpm 750 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the no-voltage release in a DC motor starter fails to operate on failure of supply, on resumption of supply the motor will not start automatically. start automatically without trouble. get damaged. develop very low starting torque. not start automatically. start automatically without trouble. get damaged. develop very low starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V curve of synchronous motor shows variation of power factor and supply voltage during hunting. power factor and DC excitation at constant load. supply voltage and excitation current at constant load. supply voltage and field current at constant excitation. power factor and supply voltage during hunting. power factor and DC excitation at constant load. supply voltage and excitation current at constant load. supply voltage and field current at constant excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the brushes remain in contact with conductors which there is no hard and fast rule for this. lie in the inter polar gaps. lie under south pole. lie under north pole. there is no hard and fast rule for this. lie in the inter polar gaps. lie under south pole. lie under north pole. ANSWER DOWNLOAD EXAMIANS APP
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