49) The most common generated frequency in India is :

50) The frequency of 6 pole alternator, running at 1500 rpm is :

51) Find the number of cycles per second of a 6 pole alternator, running at 1000 rpm.

52) An alternator is running at a speed of 1500 rpm, at the frequency of 50 Hz, calculate the number of poles ?

53) In alternator the factor by which the full pitch voltage is multiplied to get voltage generated in fractional pitch is called as :