Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? either GNA or MNA None of these GNA MNA either GNA or MNA None of these GNA MNA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Counter emf of a DC motor exceeds supply voltage aids applied voltage. helps in energy conversion. regulates its armature voltage. exceeds supply voltage aids applied voltage. helps in energy conversion. regulates its armature voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be pulsating and unidirectional steady and unidirectional oscillating None of these pulsating and unidirectional steady and unidirectional oscillating None of these 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 voltage magnitude same prime mover speed same phase sequence same frequency same voltage magnitude same prime mover speed same phase sequence same frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The 3 - Φ induction motors are, by a very considerable margin, the most widely used AC motors as they have maximum efficiency and maximum starting torque. these are cheaper in cost, simple and rugged in construction. they are capable of operation under range of leading and lagging pf. they have very good speed regulation. they have maximum efficiency and maximum starting torque. these are cheaper in cost, simple and rugged in construction. they are capable of operation under range of leading and lagging pf. they have very good speed regulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a part of transformer? Radiator. Tap changer. Commutator. Conservator tank. Radiator. Tap changer. Commutator. Conservator tank. ANSWER DOWNLOAD EXAMIANS APP
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