ACS Powerplant Systems & Engine Overhaul

Question 1

What is the main purpose of the carburetor in an aircraft engine?

Accepted Answer

Mix air and fuel

Answer

Lubricate engine parts

Answer

Increase engine temperature

Answer

Control exhaust gases

Question 2

What component cools the cylinders of an air-cooled engine?

Accepted Answer

Cooling fins

Answer

Turbocharger

Answer

Radiator

Answer

Compressor

Question 3

What type of oil system is most common in aircraft engines?

Accepted Answer

Dry sump

Answer

Wet sump

Answer

Splash system

Answer

Hydraulic system

Question 4

During an overhaul, how are engine cylinders typically cleaned?

Accepted Answer

Bead blasting

Answer

High-pressure water jet

Answer

Chemical wash

Answer

Sandpaper

Question 5

Which tool measures cylinder wear in an engine?

Accepted Answer

Cylinder bore gauge

Answer

Feeler gauge

Answer

Micrometer

Answer

Dial indicator

Question 6

What part regulates the speed of a propeller?

Accepted Answer

Governor

Answer

Tachometer

Answer

Throttle

Answer

Mixture control

Question 7

What is used to check crankshaft runout?

Accepted Answer

Dial indicator

Answer

Feeler gauge

Answer

Micrometer

Answer

Torque wrench

Question 8

What causes detonation in a reciprocating engine?

Accepted Answer

Premature explosion of the fuel/air mixture

Answer

Incorrect oil pressure

Answer

Low cylinder head temperature

Answer

Excessive airspeed

Question 9

Which type of inspection checks for internal engine cracks?

Accepted Answer

Magnetic particle inspection

Answer

Dye penetrant inspection

Answer

Ultrasonic inspection

Answer

Visual inspection