Explanation: For synchronous machines of large sizes, adequate cooling arrangements must be incorporated to dissipate the heat produced by various losses. 5. In a synchronous generator, the frequency of the generated EMF depends on
A. rotational speed
B. poles
C. both rotational speed and poles
D. none of the mentioned
Answer:A
Explanation: For synchronous machines of large sizes, adequate cooling arrangements must be incorporated to dissipate the heat produced by various losses. 5. In a synchronous generator, the frequency of the generated EMF depends on
A. rotational speed B. poles C. both rotational speed and poles D. none of the mentioned
Explanation: f = PN/120 Hz 6. A synchronous machine can be connected to an energy system only when ___________