Question

What is the thickness of the most commonly used grade for stator laminations?

(a) 0.5 mm

(b) 1 mm

(c) 1.5 mm

(d) 2 mm

I had been asked this question during an interview.

My query is from Construction of Hydro-Generators topic in portion Design of Synchronous Machines of Design of Electrical Machines

Answer 1

Correct choice is (a) 0.5 mm

The explanation is: The most commonly used grade for the stator laminations is grade 230. The thickness of this most commonly used grade for the stator laminations is 0.5 mm.