FREE AVIATION AND STUDY GAMES ABOUT

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FREE AVIATION AND STUDY GAMES ABOUT

RECIPROCATING ENGINE EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -24 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: What is Cylinder Compression Ratio?

Answer:

Comparison of volume TDC and BDC

Question 2: What is the equation for piston displacement?

Answer:

V=A*H Question 3: Who built the first successful Piston Engine working on a four stroke cycle in 1876?

Answer:

Dr. N A Otto

Question 4: What is the stroke?

Answer:

Distance from Top Dead Center to Bottom Dead Center.

Question 5: What is in the mixture that is ignited in the cylinder?

Answer:

Fuel and air.

Question 6: In ft-lb per second, what is one horsepower?

Answer:

550 ft-lb per second.

Question 7: What is the optimal air to fuel mixture ratio?

Answer:

15 to 1 Question 8: 1. An internal combustion engine is an engine in which mechanical energy is produced by

Answer:

combustion

Question 9: what are the five events of the otto cycle?

Answer:

induction, compression, ignition, power, exhaust

Question 10: What is Pre-Ignition?

Answer:

Fuel/Air mixture is ignited in advance of the normal timed ignition

Question 11: spark plug

Answer:

ignites fuel mixture by means of a spark

Question 12: What is Detonation?

Answer:

Fuel/Air mixture detonates after a normal timed ignition and explodes instead of burning smoothly.

Question 13: What does it mean if exhaust gases are blue?

Answer:

Oil is burning in cylinders

Question 14: What is the most common internal combustion system?

Answer:

Four stroke

Question 15: The 4 purposes of the piston are to

Answer:

Draw in fuel, Compress Mixture, Transfer power and Expel exhaust.

Question 16: What is the order or a four-stroke cycle?

Answer:

1, 3, 2, 4

Question 17: What is Manifold Pressure?

Answer:

The average absolute pressure of the air or fuel/air charge in the intake manifold and is measured in units of inches of mercury(Hg).

Question 18: What are the strokes of a four-stroke engine?

Answer:

Intake, Compression, Power, Exhaust

Question 19: what are the advantages of fuel Injection?

Answer:

1) No throttle plate ice 2)Uniform delivery of mixture to cylinders 3)More efficient than carburetors

Question 20: what ignites the fuel/air mixture?

Answer:

the spark plug

Question 21: What stroke-cycle is most used in aircraft?

Answer:

Four- Stroke Cycle.Question 22: what type of horsepower does the engine make before any other factors withdraw power

Answer:

brake horsepower

Question 23: What are the functions of the carburetor?

Answer:

Vaporizes Gas to the cylinder using a venturi. Meter fuel air mixture.

Question 24: Greater piston displacement equals

Answer:

Greater maximum HP an engine can develop.