Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor copper loss? 60W 100W 80W 40W 60W 100W 80W 40W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine 6 pole wave winding is used. The number of parallel paths are? 2 1 4 6 2 1 4 6 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 north pole. lie under south pole. there is no hard and fast rule for this. lie in the inter polar gaps. lie under north pole. lie under south pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the excitation of normally operating unloaded, salient pole synchronous motor suddenly gets disconnected, it continues to run as a variable reluctance motor. DC motor. switched reluctance motor. induction motor. variable reluctance motor. DC motor. switched reluctance motor. induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starter is not used with large DC motor for starting, it will draw a starting current many times its rated full load current. all of above. damage the armature and commutator. provide execessive voltage drop in line. draw a starting current many times its rated full load current. all of above. damage the armature and commutator. provide execessive voltage drop in line. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where power factor is less. less costly motor is not required. high starting torque. low starting torque. power factor is less. less costly motor is not required. high starting torque. low starting torque. ANSWER DOWNLOAD EXAMIANS APP
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