Posted: January 21st, 2015

In modern engines, what establishes the proper ignition timing based on signals received from various sensors on the engine? Spark and distributor housing The computer System of spark advance A pair ofweights

1. In modern engines, what establishes the proper ignition timing based on signals received from various sensors on the engine? Spark
and distributor housing The computer System of spark advance A pair ofweights

2. What is the primary function of engine
oil? lncrease clearance Conserve energy Provide lubrication Reduce friction

3. All automotive engines that are equipped with
full-floating piston pins use which type oflubrication system? Splash system Full-force-feed lubrication system Force-feed
lubrication system Combination splash and force-feed system

4. What does a higher SAE number mean with respect to
viscosity? Decreases lncreases Stays the same Both increase and decrease

5. Which component when opened allows engine exhaust
to bypass the turbochargerturbine, reducing intake pressure? Turbocharger Waste Gate Valve Exhaust Manifold Exhaust
Pipe

8. Which property oflubricating oil affects heat generation in the engine? Clearance between parts Wscosity Cold
temperatures Detergent

7. What mechanical device produces reciprocating motion from rotary motion? Engine
Block Camshaft Thrust Plate Bearing

8. What is the main purpose of an airfilter? Shortens the life of an engine Allows
matter into the lubrication system Allows foreign particles to enterthe engine Prevents foreign particles from entering the
engine

9. What measures are taken when signs of corrosion appear on a battery? Clean with soap only Use a wire brush and apply
baking soda, water, and a corrosion inhibitor Use a wire brush and apply grease Clean with water only

10. What is most important
function of engine oil? Conserve Energy To reduce friction between moving parts Remove Heat Maintain clearance between moving
pans

11. What is the function ofthe oil pressure gauge? Determines the pressure that the oil strainer creates Determines the
pressure that the oil pump creates Determines the pressure that the oil pressure sensing switch creates Determines the pressure that the
oil pan creates

12. An intake stroke is the movement ofthe piston from between what two positions in the cylinder? Top-dead-center
to middle-dead-center Top-dead-centerto bottom-dead-center Bottom-dead-centerto middle-dead-center Bottom-dead-centerto
top-dead-center

13. The valve train consists ofvalves and a mechanism that opens and closes them. Select the opening and closing
mechanism. Cylinder Head Valves Camshaft Crankshaft

14. Electrolyte is a mixture ofwhat two substances? Sulfuric Acid
and Water Fuel and air Fuel and water Lead peroxide and water

15. Which ofthe following is the correct method of storing
batteries? Stack batteries in multiple layers on a platform Store batteries in a heated area a platform Store batteries in a single
layer Remove all electrolyte when storing batteries

18. The main purpose ofthe oil pump is to force oil into which
system? Engine Oil System Steering System Rotor System Tire System

17. What are the components ofthe primary distributor
circuit in a spark ignition system. A rotor mounted on top ofthe cam and a capacitor A set of contacts and a rotor mounted on top of
the cam A set of contacts and a capacitor connected across the contacts A capacitor and a cap with high tension terminals

18. What
is the function ofthe oil cooler? It helps to conserve heat to heat the engine It helps to dissipate airto cool the engine It
helps to circulate cool airto cool the engine It helps to dissipate heat to cool the engine

19. What are the two majortypes of
thermostats? lnhibitor and resistance Pellet and bellows Ethyl and Methyl Surface and shroud

20. What is the purpose ofthe
spark ignition system? To serve as a current stabilizerforthe electrical system To deliver high current to the spark plugs with
propertiming To step down voltage electricity to a much lowervalue To deliverthe high voltage to the spark plug
sequenfiaHy

21. What is the main function ofthe fuel injection pump? Sends measured charges offuel to injectors at timed
intervals Controls the maximum fuel speed to each pump in a distributor system Sends measurements of charges to governor at timed
intervals in distributor system Controls the idle and prevents the engine from over speeding

22. What component houses the crankshaft
and usually the oil supply? Piston Crankcase Piston Ring Cylinder

23. What is a lead-acid storage battery? One or more
cells for storing electrical energy as chemical energy An electric generatorfor producing current One or more cells which generate
electricity through a chemical reaction An electrical device that produces voltage by electromagnetic induction

24. Which component
uses the force of engine exhaust to force the compressed air-fuel into the engine? Turbine
Wheel Cylinder Turbocharger Manifold

25. What is the function ofthe engine liquid cooling system? To keep the engine cool to
the touch at all times To heat up the engine to extreme temperatures To maintain good adhesion in the gaskets and seals ofthe
engine To provide temperature stability for an engine to operate at peak proficiency

28. The Army Oil Analysis Program (AOAP) is a
mandatory maintenance tool forwhat types of equipment in the Army inventory? All transportation Selected aircraft All
logistical All aeronautical and selected non-aeronautical

27. What is the main purpose ofthe mechanical centrifugal governor? To
sense and control engine speed and load conditions To sense and control filter speed and load conditions To sense and control fuel
injection and load conditions To sense and control fuel tank speed and load conditions

28. Select an auxiliary function ofa
camshaft. Register speed on the speedometer Shut offthe engine Apply the emergency brake Drive the oil pump

29. Which answer
best describes the advantage of sampling lubrication that saves hours of maintenance downtime? Annual inspections Shorter semi-annua
inspections Early detection, reducing failures and rebuild cost Reduced need forweekly inspections

30. What is the function ofthe
springs in a vane pump? Allow a back and forth movement ofthe rotor Press the vanes against the inside ofthe pump housing Turn
the rotor shaft Hold the rotortogether

31. Which component is an engine-driven air pump that forces air-fuel mixture into the
engine? Waste Gate Charger Supercharger Turbocharger Air Charger

32. What are the two types of cylinder sleeves? Wet and
Dry Corroded and Shiny Wet and Damp Diesel and Gas

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