DC MOTORS - Quiz

1) Which machine converts electrical power to mechanical power?

Alternator DC motor DC generator Transformer

2) Which rule is used to find out direction of rotation of DC motor?

Flemings left hand rule Flemings right hand rule Cork screw rule End rule

3) Which type of magnetic field is necessary for working of DC motor?

Pulsating magnetic field Alternating magnetic field Rotating magnetic field Uniform magnetic field

4) What is the value of angle between fingers in Flemings left hand rule?

Right angles to each other 40 degrees to each other 45 degrees to each other 60 degrees to each other

5) What is the unit of torque in DC motor?

Joule Newton Newton - metre Watt