Electrical Machines The emf induced in a conductor rotating in a bipolar field is AC. both of above. DC. None of these AC. both of above. DC. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? 0.5 any of the above 1 0 0.5 any of the above 1 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 1/√5 1/3 2/√5 1/√2 1/√5 1/3 2/√5 1/√2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the reason for stationary armature essential in alternators above 5 KVA? Operating cost is less. All of these Collecting of large current is simple. Insulation requirement is less. Operating cost is less. All of these Collecting of large current is simple. Insulation requirement is less. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 250 A. 340 A. 460 A. 570 A. 250 A. 340 A. 460 A. 570 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm. Find the rotor efficiency? 96% 92% 94% 95% 96% 92% 94% 95% ANSWER DOWNLOAD EXAMIANS APP
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