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ASVAB-Automotive-and-Shop


ASVAB Section 4 : Automotive & Shop Information


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Question: 198


Pouring cold water on an overheated engine .

  1. reduces damage caused by overheating.

  2. makes no difference.

  3. should only be done by a qualified mechanic.

  4. could cause the engine block to crack.


Answer: D


Question: 199


A two-cycle engine will normally be found on .

  1. small cars

  2. large diesel trucks

  3. trucks, vans, and some cars

  4. snowmobiles, chainsaws, and some motorcycles


Answer: D


Question: 200


The difference between a single-acting and an opposed piston engine is .

  1. Single-acting piston engines wear longer.

  2. Opposed piston engines have cylinders set in a V-shape.

  3. Single-acting piston engines have one piston per cylinder and opposed piston engines have two.

  4. Single-acting piston engines are used with carburetors and opposed piston engines are used with fuel injectors.


Answer: C


Question: 201


A gauge shows the complete loss of oil pressure while driving. The best action is to .

  1. Stop by the gas station when convenient to top off the oil.

  2. Pull over immediately and investigate the problem.

  3. Drive directly to a repair garage.

  4. Assume everything is fine and continue driving as usual.


Answer: B

Question: 202


In an overhead valve system (OHV), what mechanism opens and closes the valves?

  1. rocker arms

  2. camshaft

  3. valve rotator

  4. electrical energy from the alternator


Answer: A


Question: 203


If a car’s ignition system, lights, and radio don’t work, the part that’s probably malfunctioned is the .

  1. cylinder block

  2. water pump

  3. carburetor

  4. battery


Answer: D


Question: 204


The primary purpose of piston rings is to .

  1. seal the combustion chamber and allow the pistons to move freely.

  2. connect the piston to the crankshaft.

  3. allow fuel to enter the piston cylinder.

  4. provide lubrication to the piston cylinder.


Answer: A


Question: 205


Connecting rods connect the piston to the .

  1. flywheel

  2. fuel pump

  3. crankshaft

  4. battery


Answer: C


Question: 206


If an alternator overcharges the battery, a likely explanation is .

  1. The governor has malfunctioned.

  2. The voltage regulator isn’t working properly.

  3. The ignition coil has overheated.

  4. The battery-acid solution is low.

Answer: B


Question: 207


A primary advantage of the electronic ignition system over conventional ignition systems is .

  1. the electronic ignition system is less expensive to repair.

  2. the electronic ignition system provides a higher voltage.

  3. the electronic ignition system allows for use of a lower octane fuel.

  4. All of the above.


Answer: B


Question: 208


Overheating the engine can cause all of the following problems EXCEPT .

  1. burned engine bearings

  2. enlarged pistons

  3. melted engine parts

  4. improved fuel efficiency


Answer: D