A2.U7 Quiz

During which stroke of a reciprocating engine is the fuel air mixture ignited? (7.A.1)

• Intake stroke
• Compression stroke
• Power stroke
• Exhaust stroke

In which type of reciprocating engine are the cylinders arranged on opposite sides of the crankcase in order to provide a high power-to-weight ratio? (7.A.1)

• Radial engine
• In-line engine
• V-type engine
• Horizontally-opposed engine

Compared to a climb propeller, which of these is true for a cruise propeller? SELECT ALL THAT APPLY. (7.A.2)

• They have a higher pitch.
• They produce more drag.
• They are more effective at higher power.
• They are more efficient for long-range cruising.
• They can rotate at the hub to change the angle of attack.

True or False. When decreasing power to a constant-speed propeller, the pilot should first reduce RPM before reducing manifold pressure. (7.A.2)

• True
• False

True or False. When decreasing power to a constant-speed propeller, the pilot should first reduce RPM before reducing manifold pressure. (7.A.2)

• Increased power
• Engine roughness
• Increased fuel-air flow to engine
• Decreased engine humidity

Suppose you are taking off in an airplane on a cool day and from an airport at sea level. Where should you set the fuel-air mixture? (7.A.3)

• The "full-rich" position
• The "lean" position

True or False. At the end of your flight you perform a post-flight magneto check by turning the ignition switch to “Off” and back to “On” quickly. The check is passed if the engine continues to run. (7.A.4)

• True
• False

Why does an engine need oil? Select all that apply. (7.A.4)

• Removing dirt and other contaminants
• Cooling the temperature of the engine
• Burning with the fuel-air mixture to provide power
• Lubricating the moving parts of the engine
• Forming a seal between the cylinder walls and piston rings

As a pilot, you would like to reduce the engine temperature of your aircraft. Which of these actions can you take? (7.A.4)

• Decrease airspeed
• Enrich the mixture
• Close the cowl flaps
• Add water to the engine