All d.c. machines are characterized by
All d.c. machines are characterized by
All d.c. machines are characterized by Read More »
DC Motor MCQs
A dc shunt motor is driving a constant torque load with rated excitation. If the field current is reduced to half, then the speed of the motor will become
A dc shunt motor is driving a constant torque load with rated excitation. If the field current is reduced to half, then the speed of the motor will become
The armature current drawn by a dc motor is proportional to
The armature current drawn by a dc motor is proportional to
The armature current drawn by a dc motor is proportional to Read More »
If the armature current of a dc motor is increased keeping the field flux constant, then the developed torque
If the armature current of a dc motor is increased keeping the field flux constant, then the developed torque
When an electric traian is moving down a hill the dc motor acts as
When an electric traian is moving down a hill the dc motor acts as
When an electric traian is moving down a hill the dc motor acts as Read More »
The direction of rotation of a dc motor can be reversed by reversing the connection to
The direction of rotation of a dc motor can be reversed by reversing the connection to
The direction of rotation of a dc motor can be reversed by reversing the connection to Read More »
In dc motor, the amount of flux leakage depends on
In dc motor, the amount of flux leakage depends on
In dc motor, the amount of flux leakage depends on Read More »
In a compound dc motor, the shunt field winding as compared to series winding will have
In a compound dc motor, the shunt field winding as compared to series winding will have
In a compound dc motor, the shunt field winding as compared to series winding will have Read More »
When the direction of power flow reverses, a differentially compounded motor becomes
When the direction of power flow reverses, a differentially compounded motor becomes
When the direction of power flow reverses, a differentially compounded motor becomes Read More »