A DC shunt generator builds up to a voltage of 220 V at no load while running at its rated speed. If the speed of the generator is raised by 25% kepping the circuit conditions unaltered, then the Voltage to which the machine would build up will

• A.  increase to value lying between 220 V and 1.25 times 220 V
• B.  not change and remain at 220 V
• C.  increase to a value greater than 1.25 times 220 V
• D.  increase to 1.25 times 220 V

Answer: (D)