Electrical Machines In a DC motor under constant terminal voltage what is the relation between torque (Te) and power (P) T is independent of P T∝ P T∝ P² T∝ P³ T is independent of P T∝ P T∝ P² T∝ P³ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The coil spam must be exactly equal to people pitch. none of above. may or may not be exactly equal to people pitch. can never be equal to pole pitch. must be exactly equal to people pitch. none of above. may or may not be exactly equal to people pitch. can never be equal to pole pitch. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a synchronous motor is running at synchronous speed, the damper winding produces eddy current torque. damping torqe. both 1 and 2. no torque. eddy current torque. damping torqe. both 1 and 2. no torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, 1. physically, the brush axis is along the direct axis 2. physically, the brush axis is along the interpolar axis 3. schematically, the brush axis is along the direct axis 4. schematically, the brush axis is along the quadrature axis 5. armaturemmf is directed along the brush axis From these, the correct statements are 2, 4, 5 1, 4,5 1 , 3, 5 2, 3, 5 2, 4, 5 1, 4,5 1 , 3, 5 2, 3, 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 frequency same prime mover speed same voltage magnitude same phase sequence same frequency same prime mover speed same voltage magnitude same phase sequence ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Pole changing methods are suitable only for ___________ type induction motor. linear. none of these. wound. cage. linear. none of these. wound. cage. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS