Question

What is the outer diameter of the stator core and outer casing of 500 MW turbo alternator?

(a) 5 m, 2 m

(b) 6 m, 5 m

(c) 3 m, 4 m

(d) 4 m, 7 m

I had been asked this question by my school teacher while I was bunking the class.

This interesting question is from Construction of Turbo-Alternators topic in section Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Correct choice is (c) 3 m, 4 m

The explanation: For a 500 MW turbo alternator the outer diameter of the stator core is 3 m. The diameter of the outer casing is 4 m.