Question

What is the formula for height of transformer tank?

(a) height of transformer tank = Height of transformer frame + clearance height between the assembled transformer and tank

(b) height of transformer tank = Height of transformer frame * clearance height between the assembled transformer and tank

(c) height of transformer tank = Height of transformer frame/clearance height between the assembled transformer and tank

(d) height of transformer tank = Height of transformer frame – clearance height between the assembled transformer and tank

This question was posed to me during an online interview.

My doubt stems from Design of Tank topic in division Design of Transformers of Design of Electrical Machines

Answer 1

Correct choice is (a) height of transformer tank = Height of transformer frame + clearance height between the assembled transformer and tank

To explain I would say: Firstly, the height of the transformer frame is calculated. Next, the clearance height between the assembled transformer and tank is also calculated. Substitute the values to obtain the height of transformer tank.