Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 24 10 12 5 24 10 12 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a necessary condition to be satisfied for synchronising an incoming alternator to an already operating alternator? same prime mover speed same frequency same phase sequence same voltage magnitude same prime mover speed same frequency same phase sequence same voltage magnitude ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation of the synchronous generator fails, it acts as a/an synchronous motor. induction generator. induction motor. synchronous generator. synchronous motor. induction generator. induction motor. synchronous generator. ANSWER DOWNLOAD EXAMIANS APP
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 machine B none of these machine A any of the two machines machine B none of these machine A any of the two machines ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is 440 A. 44 A. 40 A. 400 A. 440 A. 44 A. 40 A. 400 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Motor dc series motor. dc shunt motor with field weakening. dc compound motor. dc shunt with armature resistance control. dc series motor. dc shunt motor with field weakening. dc compound motor. dc shunt with armature resistance control. ANSWER DOWNLOAD EXAMIANS APP
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