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Reciprocating Engines Written Exam Questions Correctly Answered.
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Reciprocating Engines Written Exam Questions Correctly Answered. Which condition would be the least likely to be caused by failed or failing engine bearings? - CORRECT ANSWER Low oil temperatures The five events of a four-stroke cycle engine in the order of their occurrence are - CORRECT AN...

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  • August 19, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • engineering
  • reciprocating engines written exam questions corre

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Reciprocating Engines Written Exam
Questions Correctly Answered.

Which condition would be the least likely to be caused by failed or failing engine bearings? - CORRECT
ANSWER Low oil temperatures



The five events of a four-stroke cycle engine in the order of their occurrence are - CORRECT ANSWER
intake, compression, ignition, power, exhaust



When is the fuel/air mixture ignited in a conventional reciprocating engine? - CORRECT ANSWER Shortly
before the piston reaches the top of the compression stroke



What special procedure must be followed when adjusting the valves of an engine equipped with a
floating cam ring? - CORRECT ANSWER Eliminate cam bearing clearance when making valve adjustment.



What conditions will cause an engine to have an increased tendency to detonate? - CORRECT ANSWER
High manifold pressure, high intake air temp, and engine overheating



During the inspection of an engine control system in which push-pull control rods are used, the threaded
rod ends should - CORRECT ANSWER be checked for the amount of thread engagement by means of the
inspection holes.



The floating control thermostat, used on some reciprocating engine installations, helps regulate oil temp
by - CORRECT ANSWER controlling air flow through the oil cooler



What does valve overlap promote? - CORRECT ANSWER Better scavenging and cooling characteristics



What could cause excessive pressure buildup in the crankcase of a reciprocating engine? - CORRECT
ANSWER Plugged crankcase breather.

, Which of the following engine servicing operations generally requires engine pre-oiling prior to starting
the engine? - CORRECT ANSWER engine installation



If fuel/air ratio is proper and ignition timing is correct, the combustion process should be completed -
CORRECT ANSWER just after top center at the beginning of the power stroke



Regarding engine crankshafts... - CORRECT ANSWER Movable counterweights serve to reduce the
torsional vibrations in an aircraft reciprocating engine



On which strokes are both valve on a four-stroke cycle reciprocating aircraft engine open? - CORRECT
ANSWER Exhaust and intake



What is likely to occur if a reciprocating engine is operated at high power settings before it is properly
warmed up? - CORRECT ANSWER Oil starvation of bearings and other parts



One cause of afterfiring in an aircraft engine is - CORRECT ANSWER an excessively rich mixture



If air is heard coming from the crankcase breather or oil filler during a differential compression check,
what is this an indication of? - CORRECT ANSWER piston ring leakage



Direct mechanical push-pull carburetor heat control linkages should normally be adjusted so that the
stop, located on the diverter valve, will be contacted... - CORRECT ANSWER before the stop at the
control lever is reached in both HOT and COLD positions



Engine crankshaft runout is usually checked - CORRECT ANSWER during engine overhaul and after a prop
strike or sudden engine stoppage



If the oil pressure of a cold engine is higher than at normal operating temps, the - CORRECT ANSWER
engine's lubrication system is probably operating normally.



During routine inspection of a recip engine, a deposit of small, bright, metallic particles which do not
cling to the magnetic drain plug is discovered in the oil sump and on the surface of the oil filter. This

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