ASVAB Automotive Information Practice Test 218142 Results

Your Results Global Average
Questions 5 5
Correct 0 2.96
Score 0% 59%

Review

1

What's the name of the low-voltage winding in the ignition coil?

57% Answer Correctly

secondary coil winding

tertiary coil winding

primary coil winding

distributor coil winding


Solution

The ignition coil is a high-voltage transformer made up of two coils of wire. The primary coil winding is the low-voltage winding and has relatively few turns of heavy wire. The secondary coil winding is the high-voltage winding that surrounds the primary and is made up of thousands of turns of fine wire. Current flows from the battery through the primary coil winding which creates a changing magnetic field inside the secondary coil. This induces a very high-voltage current in the secondary coil which it feeds to the distributor.


2

Piston rings are responsible for which of the following?

50% Answer Correctly

containing combustion

regulating oil distribution inside the cylinder

connecting the piston to the camshaft

connecting the piston to the spark plug


Solution

Cylinders act as a guide for the pistons that translate the heat energy of combustion into the mechanical energy necessary to move a vehicle. Piston rings seal the piston to the cylinder to contain combustion gases and also regulate the oil distribution between the piston and cylinder wall. A cylinder head closes in the top of the cylinder forming the combustion chamber which is sealed by a head gasket (head). The head provides space for air and fuel intake valves, exhaust valves, and mounts for spark plugs and fuel injectors.


3

What's the name of the high-voltage winding in the ignition coil?

51% Answer Correctly

battery coil winding

primary coil winding

secondary coil winding

initial coil winding


Solution

The ignition coil is a high-voltage transformer made up of two coils of wire. The primary coil winding is the low-voltage winding and has relatively few turns of heavy wire. The secondary coil winding is the high-voltage winding that surrounds the primary and is made up of thousands of turns of fine wire. Current flows from the battery through the primary coil winding which creates a changing magnetic field inside the secondary coil. This induces a very high-voltage current in the secondary coil which it feeds to the distributor.


4

Which of the following is not part of an engine's cooling system?

74% Answer Correctly

thermostat

air conditioner

radiator

coolant


Solution

The purpose of an automobile engine's cooling system is to circulate coolant around the engine so it can absorb and dissipate heat. The water pump pumps coolant through the various components in the system and the radiator cools down coolant after it has heated up after passing through the engine. The thermostat controls the flow of coolant based on engine temperature while the cooling fan draws air through the radiator when the car isn't moving fast enough for unforced air to cool things down on its own.


5

What does the timing belt do?

64% Answer Correctly

synchronizes the cam and the camshaft

calibrates the speedometer

synchronizes the camshaft and the crankshaft

synchronizes each piston to the crankshaft


Solution

Maintaining proper synchronization between the rotation of the camshaft and the rotation of the crankshaft is critical to ensure that the engine's valves open and close at the proper times during each cylinder's intake and exhaust strokes.