AC Generator

Explain why, the direction of induced current in the coil of an A.C. Generator changes after every half revolution of the coil.

Draw phase diagram for a series LCR circuit with alternating voltage source, determine the expression for the impedance of the circuit. OR Draw a diagram of AC generator and describe it.Derive an expression for instantaneous value of induced emf .

An AC generator consists of a coil of 100 turns and area 5 m^2 rotating at an angular speed of 60 rad/s in a uniform magnetic field B =0.5 T between two fixed pole pieces. Find the peak value of voltage drawn from generator.

An AC generator consists of a coil of 200 turns and area of 5 m^(2) rotating at a constant angular speed of 60 rad /s in a uniform magnetic field of 0.05 T. The resistance of the coil is 400 omega . Calculate maximum current drawn from the generator .

If a capacitor is connected to two different A.C generators, then the value of capactive reactance is

In an A.C. generator, when the plane of the armature is perpendicular to the magnetic field

Out of an A.C. generator and a D.C. generator : (a) which one uses a commutator (split rings) ? (b) which one uses slip rings ?