AC Generator MCQ (Multiple Choice Questions) PDF Download

When a coil rotated in magnetic field the induced current in it

1. continuously changes
2. remains same
3. becomes zero
4. becomes maximum

In A.C generator increasing the no. of turns in the coil

1. decreases the Electromotive force (EMF)
2. Electromotive force (EMF) remains same
3. increases the Electromotive force (EMF)
4. Electromotive force (EMF) becomes zero

The Electromotive force (EMF) developed by the generator depends upon

1. area of rotating wire
2. length of rotating wire
3. radius of wire
4. size of magnet

The metal detectors installed at airports and other places for security purpose are based on the principle of

1. potential difference
2. electromagnetic difference
3. electromagnetic induction
4. potential energy

If the coil is placed perpendicular to field lines then the number of lines passing through the coil is

1. minimum
2. maximum
3. zero
4. may be max. or min.