Gas Turbine Engine Quiz

What is the constant-pressure thermodynamic cycle used by a gas turbine engine called?

• Diesel cycle

• Brayton cycle

• Rankine cycle

• Otto cycle

What is the basic difference between the Otto cycle and the Brayton cycle?

• The events occur at the same time in different locations

• The events occur at different times in different locations

• The events occur at different times in the same location

• The events occur at the same time in the same location

What is the primary measure of the propulsive force developed by a turbojet or turbofan engine?

• Torque

• RPM

• Horsepower

• Thrust

What is the formula for calculating the momentum of air and fuel leaving the engine?

• Fn = Wa (V₂ - V₁) + Wf (V₂) + Aj (P2 - Pam)/g

• WaW₁/g

• Mass=Weight (pounds)/Acceleration due to gravity

• V₁ +0

What is the effect of increasing airspeed on the net thrust produced by a turbojet or turbofan engine?

• Net thrust becomes zero

• Net thrust remains constant

• Net thrust decreases

• Net thrust increases

What is the effect of increasing air temperature on the thrust produced by a gas turbine engine?

• Thrust remains constant

• Thrust decreases

• Thrust increases

• Thrust becomes zero

What is the effect of increasing air pressure on the thrust produced by a gas turbine engine?

• Thrust decreases

• Thrust increases

• Thrust becomes zero

• Thrust remains constant

At what altitude does the air temperature stabilize at approximately -56.5°C?

• 20,000 feet

• 40,000 feet

• 36,000 feet

• 30,000 feet

What is the resultant effect of ram and airspeed on the net thrust produced by a turbojet or turbofan engine?

• Net thrust increases

• Net thrust becomes zero

• Net thrust remains constant

• Net thrust decreases

What is the purpose of water injection in a gas turbine engine?

• To increase fuel efficiency

• To reduce engine noise

• To increase takeoff thrust

• To decrease engine temperature