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AMT Powerplant Quiz

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1. Repair engine electrical system components (8344)
The stationary field strength in a direct current generator is varied
A - by the reverse-current relay.
B - because of generator speed.
C - according to the load requirements.
2. Inspect check troubleshoot service and repair engine cooling systems (8832)
The greatest portion of heat generated by combustion in a typical aircraft reciprocating engine is
A - dissipated through the cylinder walls and heads.
B - converted into useful power.
C - carried out with the exhaust gases.
3. Troubleshoot, service and repair electrical and mechanical fluid rate of flow indicating systems (8257)
Which unit most accurately indicates fuel consumption of a reciprocating engine?
A - Fuel pressure gauge.
B - Fuel flowmeter.
C - Electronic fuel quantity indicator.
4. Inspect, service, troubleshoot and repair reciprocating and turbine engine ignition systems and comp (8561)
Igniter plugs used in turbine engines are subjected to high intensity spark discharges and yet they have a long service life because they
A - do not require continuous operation.
B - are not placed directly into the combustion chamber.
C - operate at much lower temperatures.
5. Inspect, check, service and repair reciprocating engines and engine installations (8056)
Excessive valve clearance results in the valves opening
A - early and closing late.
B - late and closing late.
C - late and closing early.
6. Overhaul carburetor (8668)
If a float type carburetor leaks fuel when the engine is stopped, a likely cause is that the
A - float needle valve is worn or otherwise not seated properly.
B - main air bleed is clogged.
C - float level is adjusted too low.
7. Inspect and repair a radial engine (8005)
Which of the following will decrease volumetric efficiency in a reciprocating engine?

1. Full throttle operation.

2. Low cylinder head temperatures.

3. Improper valve timing.

4. Sharp bends in the induction system.

5. High carburetor air temperatures.

A - 2, 4, and 5.
B - 3, 4, and 5.
C - 1, 2, 3, and 4.
8. Perform powerplant conformity and airworthiness inspections (8254)
What section in the instructions for continued airworthiness is FAA approved?
A - Engine maintenance manual or section.
B - Engine overhaul manual or section.
C - Airworthiness limitations section.
9. Repair engine lubrication system components (8451)
What would be the probable result if the oil system pressure relief valve should stick in the open position on a turbine engine?
A - Insufficient lubrication.
B - Increased oil pressure.
C - Decreased oil temperature.
10. Inspect, check, service and repair fixed pitch constant speed and feathering propellers and propelle (8929)
Which of the following is identified as the cambered or curved side of a propeller blade, corresponding to the upper surface of a wing airfoil section?
A - Blade back.
B - Blade face.
C - Blade chord.