DC Motors In which of the following tests only one motor is required? Field's test Brake test Hopkinson's test Swinburne's test Field's test Brake test Hopkinson's test Swinburne's test ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Shunt motor Series motor Air motor Battery operated motor Shunt motor Series motor Air motor Battery operated motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used Where load changes frequently Where constant operating speed is needed Where load is constant None of these Where load changes frequently Where constant operating speed is needed Where load is constant None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current Increases Decreases None of the listed here Remains same Increases Decreases None of the listed here Remains same ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Rotor laminations End plates Pole shoes Commutator Rotor laminations End plates Pole shoes Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Shunt armature control Armature voltage control Field control Mechanical loading system Shunt armature control Armature voltage control Field control Mechanical loading system ANSWER DOWNLOAD EXAMIANS APP
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