Rehman is making a wheel using spokes. He wants to fix equal spokes are equal.How many spokes would be needed, if the angle between a pair of consecutive spokes is `40^@`?

Rehman is making a wheel using spokes. He wants to fix equal spokes are equal.Calculate the angle between a pair of consecutive spokes on a wheel with 15 spokes.

Rehman is making a wheel using spokes. He wants to fix equal spokes are equal. Help him by completing the following table. Are the number of spokes and the angles formed between the pairs of consecutive sopkes in inverse proportion?

A wheel with 25 metallic spokes each 0.4m long is rotated with a speed of 150 rev//min in a plane normal to the horizontal components of earth's magnetic field H_B at a place. If H_E=0.4G at the place, what is the induced emf between the axle and the rim of the wheel?