Electrical Machines Field weakening control method is used for the _________ ? both A and B below rated speed None of these above rated speed both A and B below rated speed None of these above rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The DC compound motors are generally Level Compound. Differentical compound. Cummulative compound. None of these. Level Compound. Differentical compound. Cummulative compound. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is an advisable to use auto transformer if the transformation ratio is near to 1. 0.5. 0.25. Greater than 1. near to 1. 0.5. 0.25. Greater than 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 2 V 4 V 1 V 0 V 2 V 4 V 1 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In the V curve shown in figure below for a synchronous motor, the parameter of Y and X coordinates are, respectively Torque and field current. Armature current and torque. Power factor and field current. Armature current and field current. Torque and field current. Armature current and torque. Power factor and field current. Armature current and field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging in induction motor occurs when number of stator teeth - number of rotor teeth = odd number. number of stator teeth - number of rotor teeth = 0. number of stator teeth - number of rotor teeth = negative number. number of stator teeth - number of rotor teeth = even number. number of stator teeth - number of rotor teeth = odd number. number of stator teeth - number of rotor teeth = 0. number of stator teeth - number of rotor teeth = negative number. number of stator teeth - number of rotor teeth = even number. ANSWER DOWNLOAD EXAMIANS APP
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