Section 6.8 - Review Exercise

1. Weight Pressure Energy Force is the capacity to do work.

2. If energy is not doing work, it is called kinetic energy potential energy .

3. Kinetic energy Potential energy is energy causing movement.

4. Boyle's law states that when the pressure on a gas is increased, the volume will be decreased increased .

5. If the piston in an engine moves such that the volume of the confined gas is doubled, the pressure of the gas will be increased reduced .

6. If the piston in an engine moves such that the pressure in the cylinder is increased, the temperature of the gas in the cylinder will decrease increase .

7. Identify these parts of a reciprocating engine by choosing their names opposite the letter in the figure to the right.

Use the following figure for question 8 - 12:

Choose the BEST answer from the options.

8. Which is the intake stroke? A B C D

9. Which diagram should be colored red to show combustion? A B C D

10. Place the above strokes in correct sequence.

       A. A B C D    B. A B C D    C. A B C D    D. A B C D

11. Which stroke shows the exhaust is burned fuel? A B C D

12. In which strokes would Boyle's and Charles' laws be working in reverse?

(Volume larger, pressure lower) A B C D & A B C D .

13. A propeller that can change its pitch automatically to suit the needs of the engine is called a variable-speed constant-speed propeller.

14. A propeller creates lift because, like a wing, it is shaped like a(n) wing airfoil flap elevator .

15. Feathering a propeller causes it to start stop windmilling.

Place the letter of the option that BEST completes the statement.

16. The type of jet engine that must be moving through the air before it can be started is a turbojet turboprop ramjet turbofan

17. In a turbojet turboprop ramjet turbofan engine, most of the air entering the engine does not pass through the compressor.

18. The turbine drives a propeller in a turbojet turboprop ramjet turbofan engine.

19. In a turbine engine, the air and fuel are mixed together in the compressor turbine combustion chamber stators

20. In a turboprop engine, the speed of the propeller is slowed down by the reduction gears compressor turbine tail cone

21. The major advantage a turbofan engine has over a turbojet engine is that it weighs less it can operate more efficiently at low altitudes and low speeds it produces less thrust at high altitudes All of the above

22. The compressor blades in a jet engine are turned by the hot exhaust gases turning the turbine hot exhaust gases striking the tail cone stator and rotor blades fuel and air mixing together in the burners