Question

An impulse turbine is essentially a __________________

(a) low-speed turbine and is used for high heads

(b) low-speed turbine and is used for low heads

(c) high-speed turbine and is used for high heads

(d) high-speed turbine and is used for low heads

The question was posed to me during an online interview.

The question is from Hydro Electric Power in division Hydro Electric Power of Irrigation Engineering

Answer 1

The correct answer is (a) low-speed turbine and is used for high heads

The explanation: It is a low-speed wheel and is relatively used for high heads over 150 meters. It works under high heads so comparatively less quantity of water is required. Pelton’s turbine is an important example of an impulse type of turbine.