Torque in DC Machines

The simple rotating loop between pole faces connected to a battery and resistor through a switch, the specifications of this machine are radius = 0.5m, length 1m, resistance = 0.3 ohms and magnitude strength = 0.25T is supplied with 120V. What is the steady state angular velocity at no-load?

12. Pulsating torque frequency in universal motor

If the torque induced is zero in the dc machine, it can be said that

The velocity of the dc machine at the final state is

The torque induced beyond the pole shoes in the DC machine is

The simple rotating loop between pole faces connected to a battery and resistor through a switch, the specifications of this machine are radius = 0.5m, length 1m, resistance = 0.3 ohms and magnitude strength = 0.25T is supplied with 120V. Suddenly the switch is closed at t=0, what is observed in the circuit?

The cogging torque is absent in the permanent magnet dc machine is due to

DC Motor torque depends on

What is the principle of torque production in a dc machine?

For a universal motor, the rated supply current is 10A giving a rated torque of 100 N-m. If a current of 5A is applied, what will be generated torque vary to?

If the torque is in the direction of rotation, the DC machine acts as

The simple rotating loop between pole faces connected to a battery and resistor through a switch, the specifications of this machine are radius = 0.5m, length 1m, resistance = 0.3 ohms and magnitude strength = 0.25T is supplied with 120V. What will be the magnitude of the following current at t=0+?