Physics

Problem

An AC generator supplies an rms emf of

110\,\text{V}

when its rotor speed is

1800\,\text{rev}\,\text{min}^{-1}

. Keeping all other factors unchanged, determine the rms emf when the rotor speed is increased to

3000\,\text{rev}\,\text{min}^{-1}

. a)

259\,\text{V}

165\,\text{V}

183\,\text{V}

74\,\text{V}