Various Sources of EMF

In an AC generator increasing number of turns in coil:

State the principle of an ac generator 

The working of quartz crystal in the watch is based on

The one that is extensively used as a piezoelectric material is

What does an electric generator generate.

Why is Weston cadmium cell considered a standard cell.

What is Weston cadmium cell 

The open circuit EMF of the Weston standard cell used for standardisation of potentiometer is:

Dynamo is a device used for converting

If frequency of an AC generator is doubled, the maximum value of emf induced in its coil will:

A coil of $500$ turns and area $100 {\mathrm{cm}}^2$ is placed at right angles to a magnetic field of $5\times {10}^{-2} \mathrm{Wb}/{\mathrm{m}}^2$. If the speed of rotation is $300 \mathrm{rps}$, what is the maximum value of induced e.m.f. in the coil?

What is the principle of working of an AC generator?

Dynamo is a device used for converting,

Ac generator is based upon the principle of

Cotyledons are also called-

Which of the following statements is incorrect about an electric generator?

For a large industrial city with much load variations , the DC generator should be

For a large industrial city with much load variations, the DC generator should be?