FREE Airframe Mechanic Reciprocating Engine Systems Questions and Answers

Question 1

Which component in a reciprocating engine ignition system is responsible for converting low voltage from the primary circuit into high voltage for the spark plugs?

Accepted Answer

Magneto

Answer

Breaker points

Answer

Condenser

Answer

Spark plug leads

Question 2

During a pre-flight inspection, an Airframe Mechanic observes excessive oil leaking from the front of a reciprocating engine around the propeller shaft. Which of the following is the most likely cause?

Accepted Answer

Worn propeller shaft oil seal

Answer

Clogged oil cooler

Answer

Over-serviced oil system

Answer

Defective oil pressure relief valve

Question 3

What is the primary function of the exhaust system in a reciprocating engine?

Accepted Answer

To safely vent hot exhaust gases overboard and reduce noise

Answer

To cool the engine cylinders

Answer

To provide thrust for the aircraft

Answer

To mix fuel and air before combustion

Question 4

A reciprocating engine is experiencing intermittent misfiring, particularly at higher RPMs. The spark plugs have been checked and are in good condition. Which of the following ignition system components should be investigated next?

Accepted Answer

Magneto internal timing or breaker points

Answer

Fuel injector nozzles

Answer

Oil temperature sensor

Answer

Alternator output

Question 5

Which of the following best describes the purpose of a carburetor's mixture control in a reciprocating aircraft engine?

Accepted Answer

To control the ratio of fuel to air entering the cylinders

Answer

To adjust the engine's idle speed

Answer

To regulate the amount of air entering the engine for power control

Answer

To enrich the fuel-air mixture during cold starts

Question 6

What is the primary function of the oil sump in a wet sump lubrication system of a reciprocating engine?

Accepted Answer

To store the engine oil supply

Answer

To cool the engine oil

Answer

To filter contaminants from the oil

Answer

To pump oil to the engine components