Pressure ratios below 20 are used in _____________ engines.
A. steam turbine
B. aero derivative engines
C. heavy frame engines
D. none of the mentioned
Answer:A
Pressure ratios below 20 are used in _____________ engines.
A. steam turbine B. aero derivative engines C. heavy frame engines D. none of the mentioned
Explanation: Lower pressure ratios are maintained in heavy frame engines.