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Sample Practice Test Questions

Automotive Information

What does the timing belt do?

synchronizes the camshaft and the crankshaft

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.

Electronics Information

Which of the following converts electrical energy into another form of energy in an electrical circuit?

load

A load is a source of resistance that converts electrical energy into another form of energy. The components of a microwave, for example, are loads that work together to convert household electricity into radation that can be used to quickly cook food.

Automotive Information

Which of the following is not a characteristic of disc brakes?

uses brake shoes

Both drum brake and disc brake assemblies use friction to stop a car's wheels from turning but each do it in a slightly different way. A drum brake assembly uses a large iron drum attached to the wheel and brake shoes that press against the drum to slow the rotation of the drum and, consequently, the wheel. A disc brake assembly employs friction in the same way as a drum brake but instead uses a rotor, also attached to the wheel, and two brake pads that squeeze against the surface of the rotor.

Word Knowledge
Unscrupulous most nearly means:
corrupt
Lacking principles.
Word Knowledge
The sweet cookie was a perfect foil to the sour lemon sorbet.
complement
One that enhances or underscores by contrast.
Math Knowledge

Find the value of a:
5a + y = -1
-2a - 3y = -3

-\(\frac{6}{13}\)

You need to find the value of a so solve the first equation in terms of y:

5a + y = -1
y = -1 - 5a

then substitute the result (-1 - 5a) into the second equation:

-2a - 3(-1 - 5a) = -3
-2a + (-3 x -1) + (-3 x -5a) = -3
-2a + 3 + 15a = -3
-2a + 15a = -3 - 3
13a = -6
a = \( \frac{-6}{13} \)
a = -\(\frac{6}{13}\)

General Science

A subatomic particle found in the nucleus of an atom. It carries no electric charge. This desribes which of the following?

neutron

A neutron is a subatomic particle found in the nucleus of an atom. It is neutral as it carries no electric charge.

General Science

Which of these is not a type of fat?

cholesterol

Fats come in three types, saturated (meats, shellfish, eggs, milk), monounsaturated (olives, almonds, avocados), and polyunsaturated (vegetable oils).

Electronics Information
series circuit

This circuit diagram represents a(n):

series circuit

A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.

Automotive Information

Which of these is not necessary for combustion?

accelerant

Combustion is the burning of an air-fuel mixture to provide energy. It requires the presence of air, fuel, and a heat source to ignite the air-fuel mixture. In the internal combustion engine that powers automobiles and trucks the combustion happens inside the engine utilzing a fuel like gasoline, diesel fuel, or natural gas.