The correct answer is:
(a) height of transformer tank = Height of transformer frame + clearance height between the assembled transformer and tank
Explanation:
The height of the transformer tank is typically the total vertical space required to enclose the transformer and its components. It is calculated by adding the height of the transformer frame (which is the physical frame that holds the transformer core and windings) to the clearance height (the space between the transformer frame and the tank, which allows for proper cooling, insulation, and maintenance).
Thus, the formula is:
Height of transformer tank=Height of transformer frame+Clearance height between the assembled transformer and tank\text{Height of transformer tank} = \text{Height of transformer frame} + \text{Clearance height between the assembled transformer and tank}Height of transformer tank=Height of transformer frame+Clearance height between the assembled transformer and tank
This ensures that the tank can adequately house the transformer components while providing the necessary clearance for operational safety and cooling.