_________ is used as coolant in turbo generators.
A. Oxygen
B. Hydrogen
C. Fuel
D. None of the mentioned
Answer:A
_________ is used as coolant in turbo generators.
A. Oxygen B. Hydrogen C. Fuel D. None of the mentioned
Explanation: Hydrogen is used as coolant in turbo generators. Compared to the other coolants available for gas turbines hydrogen is much cheaper.