Electrical Machines There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase none of these machine A any of the two machines machine B none of these machine A any of the two machines machine B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer oil is used as inert medium. a coolant. an insulator. both A and B. inert medium. a coolant. an insulator. both A and B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 55 kVA single phase alternator has an effective resistance of 0.5 Ω. An excitation current of 10 A produces 200 A armature current on short circuit and an emf of 450 V on per circuit. The synchronous reactance will be 2.781 Ω. 25.564 Ω. 2.241 Ω. 2.74 Ω. 2.781 Ω. 25.564 Ω. 2.241 Ω. 2.74 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions hunting of synchronous motor is likely to occur ? Periodic variation of load. Over-excitation. Small and constant load. Over-loading for long period. Periodic variation of load. Over-excitation. Small and constant load. Over-loading for long period. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor during DC rheostatic braking is 1 - s. s. 2 - s. 2 + s. 1 - s. s. 2 - s. 2 + s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotor resistance speed control is used in squirrel cage induction motor. dc shunt motor. synchronous motor. slip ring induction motor. squirrel cage induction motor. dc shunt motor. synchronous motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
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