Piston Situational Flashcards
Who developed the first practical piston engine, and what fuel did it use?
A. John Barber – Kerosene
B. Etienne Lenoir – Natural Gas
C. August Otto – Diesel
B
Which of the following describes the Otto cycle most accurately?
A. A three-stroke engine cycle with two power events
B. A four-stroke cycle with five distinct events
C. A two-stroke cycle using only compression and power strokes
B
What is the primary advantage of the V-engine arrangement in aircraft?
A. Increased power without excessive weight
B. Better cooling compared to radial engines
C. Ability to use both liquid and air cooling
C
Which engine layout has an odd number of cylinders and a large frontal area?
A. Radial Engine
B. In-Line Engine
C. V-Type Engine
A
Why are in-line engines often inverted in aircraft design?
A. To reduce engine weight
B. To increase propeller ground clearance
C. To allow for better cooling efficiency
C
What does “over-square” mean in piston engines?
A. The stroke length is greater than the bore diameter
B. The bore diameter is equal to the stroke length
C. The bore diameter is greater than the stroke length
B
How many degrees of crankshaft rotation are required to complete one full Otto cycle?
A. 360°
B. 540°
C. 720°
C
What is the major drawback of double and triple bank radial engines?
A. High fuel consumption
B. Increased weight and large frontal area
C. Poor mechanical efficiency
C
At what point in the cycle does combustion occur in the Otto cycle?
A. When the piston is at Bottom Dead Center
B. When the piston is at Top Dead Center
C. Just before the exhaust stroke begins
B
Why are most modern light aircraft engines arranged in a flat/horizontally opposed configuration?
A. It allows for better airflow cooling
B. It provides a shorter, more rigid engine
C. It increases rotational torque
A
