#1. What does stroke mean?
Explains the horsepower of the engine
Explains the torque of the engine
Distance that piston moves in the cylinder.
#2. How does combustion occur in diesel engines ?
By ignition of the compressed fuel-air mixture with ignition plug
By spraying of the compressed fuel-air mixture with injector nozzle
By spraying diesel fuel from the injector on the compressed air
#3. .............enables valves to be opened and closed.
#4. ........ cause pollution in exhaust gasses.
Carbon monoxide, nitrogen oxide
Carbon dioxide, hydrogen
#5. Some piston engines on aicrafts are turbocharged like cars. So which component controls the flow of exhaust gases to the turbine wheel?
#6. Reciprocating engines have different types. So which type of reciprocating engine has the cylinders are located on either side of a central crankshaft?
#7. One of the most popular reciprocating engine was used by Supermarine Spitfire in the history. This 27 liters beauty had 12 cyclinders in V shape with 2000 horsepower! So name it!
#8. Some type of reciprocating engines use water-methanol injection system. Which of the following is not the main reason of using this system?
To increase the power output
To cool certain parts of the induction system where "hot points" could produce premature ignition
To reduce NOx or carbon monoxide emissions
#9. Which following statement is not true for radial engines?
A radial engine works like any other four-stroke internal combustion engine. Each cylinder has an intake, compression, power and exhaust stroke.
In operation, the engine is so smooth, no counterbalancer is required.
A radial engine's cylinders are numbered from the top, going clockwise, with the first cylinder numbered 1.
#10. What is the main advantage of reciprocating engines?
They are narrow and allows the aircraft to have a narrow front fuselage.
The design is simple, reliable and easy to maintain.
The cylinder arrangements allowed for good cooling airflow and smooth operation.