Two dc series motors connected in series are driving the same mechanical load. If now the motors are connected in parallel, the speed becomes
In a dc shunt motor, field excitation is kept at maximum value during starting to
In a dc shunt motor, field excitation is kept at maximum value during starting to Read More »
A dc shunt motor is driving a mechanical load at rated voltage and rated excitation. If the load torque becomes double, then the speed of the motor
If back emf of d.c. motor is doubled while its speed is also doubled, then torque developed by the machine will
Current normally used to excite synchronous and d.c. generators is
Current normally used to excite synchronous and d.c. generators is Read More »
In a dc motor if the brushes are given a backward shift, then
In a dc motor if the brushes are given a backward shift, then Read More »
