Q1/A sinusoidal voltage is generated by 85 turn coil, of dimension 20 cm by 16 cm. The coil is rotated at 3000 rev/min, with its longer sides parallel to the face of a pair of poles. If the flux density produced by the poles is 0.5 T, calculate (a) the amplitude of the generated emf, (b) the frequency, (c) the r.m.s. and average