Engine Performance Quiz

Altitude control of engine is achieved by correcting:

• the fuel flow

• by increasing altitude

• by decreasing altitude

American engines are flat rated to:

• 290°F

• 190°F

• 90°F

At temperatures _____________ the flat rating, the thrusts in excess can be obtained.

• below

• same

• above

Can the thrust lost be recovered with aircraft speed increasing more?

• yes, it can be increased.

• No, it decreases.

• No, it remains constant.

Does the gas (air) condition changes in the turbine engine?

• yes

• it remains same

• there is no gas in the engine

During most operating conditions the exit velocity in propelling nozzle reaches:

• Sonic speed

• supersonic speed

• subsonic speed

For turbo-propeller engine, the power can be expressed as:

• Thrust horsepower

• Shaft horsepower

• Equivalent Shaft horsepower

Formula of the specific thrust can be given as:

• thurst x mass flow rate

• thurst / mass flow rate

• mass flow rate / thrust

Gauge pressure of engine can be given as:

• psi

• mb

• MPa

Heat released by the fuel and the kinetic energy passed into air is known as :

• Thermal energy

• Propulsive efficincy

• Potential energy