engineering recuitment ISRO Scientist Electrical Mock Test Electrical Machines DC Generators DC Generator Critical Resistance
A shunt generator has a critical field resistance of 200 ohm at a speed of 800 rpm. If the speed of the generator is increased to 1000 rpm, what is the change in critical field resistance of the generator?
1
Decrease to 160 ohm
2
Remains the same at 200 ohm
3
Increases to 250 ohm
4
Increases to 312.5 ohm