Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are poor overall efficiency. all of above. high initial cost. high maintenance cost. poor overall efficiency. all of above. high initial cost. high maintenance cost. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines From no load to full load the slip will None of these slightly increase. not change. slightly decrease. None of these slightly increase. not change. slightly decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the speed control of polyphase squirrel cage induction motor, if frequency of operation is decreased with either of these constant supply voltage V, starting torque Tst decreases None of these constant V, Tst increases either of these constant supply voltage V, starting torque Tst decreases None of these constant V, Tst increases ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on shaft torque. core loss component. synchronous speed. rotor speed. shaft torque. core loss component. synchronous speed. rotor speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC machine having P no of pair of pole pairs, Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance? PZL/4Sp² PZL/4S PZL/4Sa² PZL/ 4Sa PZL/4Sp² PZL/4S PZL/4Sa² PZL/ 4Sa ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer action requires a increasing magnetic flux. alternating electric flux. alternating magnetic lux. constant magnetic flux. increasing magnetic flux. alternating electric flux. alternating magnetic lux. constant magnetic flux. ANSWER DOWNLOAD EXAMIANS APP
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