Electrical Machines In synchronous generator a synchronous dead load (lamp, furnaces etc) has no ____________ hence it has no natural frequency of oscillation. damping torque. restoring torque. synchronizing power co efficient. mechanical rotatory system. damping torque. restoring torque. synchronizing power co efficient. mechanical rotatory system. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the mechanical power developed by a DC series motor is maximum? Back emf is equal to applied voltage. None of above. Back emf is equal to zero. Back emf is equal to half the applied voltage. Back emf is equal to applied voltage. None of above. Back emf is equal to zero. Back emf is equal to half the applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound motor has tertiary winding. only shunt field winding. both shunt and series field winding. only series field winding. tertiary winding. only shunt field winding. both shunt and series field winding. only series field winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The dc motor which can provide zero speed regulation at full load without any controller, is cumulative compound. differential compound. series. shunt. cumulative compound. differential compound. series. shunt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer action requires a constant magnetic flux. alternating electric flux. increasing magnetic flux. alternating magnetic lux. constant magnetic flux. alternating electric flux. increasing magnetic flux. alternating magnetic lux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 0.2 ohm 2 ohm. 10 ohm 100 ohm 0.2 ohm 2 ohm. 10 ohm 100 ohm ANSWER DOWNLOAD EXAMIANS APP
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