DC Motors In a dc motor constant torque is produced due to End plates Pole shoes Rotor laminations Commutator End plates Pole shoes Rotor laminations Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed in a dc motor is maximum when back emf is equal to _____ the applied voltage. One-third Twice None of the listed here Half One-third Twice None of the listed here Half ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it None of the listed here Provides fine speed control Is cheap Is simple in construction None of the listed here Provides fine speed control Is cheap Is simple in construction ANSWER DOWNLOAD EXAMIANS APP
DC Motors By flux control method of speed control of a dc shunt motor, we can obtain speeds. Below the normal speed only Above the normal speed only None of the listed here Above as well as below the normal speed Below the normal speed only Above the normal speed only None of the listed here Above as well as below the normal speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Field control Armature voltage control Shunt armature control Mechanical loading system Field control Armature voltage control Shunt armature control Mechanical loading system ANSWER DOWNLOAD EXAMIANS APP
DC Motors Differentially compound D.C. motors can find applications requiring Low starting torque Variable speed Frequent on-off cycles High starting torque Low starting torque Variable speed Frequent on-off cycles High starting torque ANSWER DOWNLOAD EXAMIANS APP
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