Electric Motor

Which one of the following is not used in big electric motors?

Electric motor can be is used in

Which of the following is not used in commercial electric motor?

The motor converts

The principle of working of a motor is

Which device is used for converting electric energy into mechanical energy?

The direction of magnetic force produced by a motor is perpendicular to the direction of-

When the plane of the armature of an $\mathrm{a}.\mathrm{c}.$ generator is parallel to the field, in which it is rotating

An electric motor operates on a $50 \mathrm{V}$ supply and a current of $12 \mathrm{A}.$ If the efficiency of the motor is $30\%,$ what is the resistance of the winding of the motor?

The role of the split ring in an electric motor is of

Armature is used to _____ the power of a motor.

An electron is accelerated under a potential difference of $182 \mathrm{V}$. The maximum velocity of electron will be

(Charge of an electron is $1.6\times {10}^{-19}$ $\mathrm{C}$ and its mass is $9.1\times {10}^{-31}$$\mathrm{kg}$)