Question : a) State the principle of an electric generator b) Write the difference between direct current and alternating current.

Question : a) State the principle of an electric generator b) Write t

1.	Question : a) State the principle of an electric generator b) Write the difference between direct current and alternating current.
Answer» Solution :a) An electric generation is based on the principle of ELECTROMAGNETIC induction when a rectangular coil is rotated in a UNIFORM magnetic field, an induced voltage is generated between the ends of the coil. b) Direct current : * Its magnitude is constant and FLOWS in one direction only. * The FREQUENCY of DC is zero Alternating current:* Its magnitude and direction reserves periodically. * The frequency of AC is finite.