Air Brake Manual Chapter 2
Air Brake System Quiz
Test your knowledge of air brake systems and their components with our comprehensive quiz! This quiz consists of 18 multiple-choice questions designed to challenge your understanding of the principles and mechanics involved in air brake operation.
In this quiz, you will cover topics such as:
- Energy conversion
- Friction and stopping power
- Torque requirements
- Braking distances
To move a vehicle, an internal combustion engine must convert its ______ energy to ______ energy.
Mechanical, heat
Heat, mechanical
Traction, friction
Friction, traction
What is the force which resists movement between two surfaces in contact with each other?
Friction
Heat
Traction
Energy
After the engine converts the energy of heat into the energy of motion, what must the breaks do to stop the vehicle?
Convert the energy of motion back into the energy of heat.
Create friction with the road.
Turn the energy of heat back into the energy of motion.
Generate traction and turn it into energy of motion.
250° is the optimal temperature for brake linings to operate under, as it prevents overheating.
True
False
In addition to the factors of energy, heat, and friction, what else influences a vehicle's ability to stop?
Weight and tire size
Speed and weight
Speed and weather conditions
Driver condition and wind resistance
When a vehicle's speed and weight are doubled, what is the stopping power increased by in order to stop?
5 times
4 times
8 times
6 times
If a lever is placed on a fulcrum with a ratio of 4:1 and downward force applied at A, how much upward force will be generated at B?
40 kg
1000 kg
400 kg
150 kg
What kind of power do both of these diagrams utilize?
The use of air
Leverage
Force
Centrifugual force
What creates pressure, which is then used to gain mechanical advantage?
Resistance
Compression
Heat
Weight
The larger the space into which air is squeezed, the greater the air's resistance to being squeezed.
True
False
If compressed air of 120 psi acts on a diaphragm of 30 square inches, how much force is produced? (by what equation?)
4 lb. Of force (120÷30)
14 400 lb. Of force (120 x 120)
3600 lb. Of force (120 x 30)
900 lb. Of force (30 x 30)
If 2000 lb. Of force is applied to a push rod to move a 6" slack adjuster operating a cam, what is the total force in inch pounds torque?
12 000 inch pounds torque (2000 x 6)
2000 inch pounds torque (2000 x 1)
330 inch pounds torque (2000 ÷ 6)
21 600 inch pounds torque (3 600 x 6)
What does stopping distance consist of?
Reaction time
Brake lag
Braking distance
All answers are correct
It requires between 80 and 100 foot pounds (960 and 12 000 inch pounds) of torque to tighten the wheel on a car.
True
False
The time it takes from the moment a hazard is recognized to the time the brake pedal is applied is known as...
Reaction time
Brake lag
Braking distance
Following distance
The actual distance a vehicle travels after the break is applied until the vehicle stops is known as...
Brake lag
Reaction time
Braking distance
Stopping distance
The time air takes to travel through a properly maintained air brake system is known as...
Brake lag
Braking distance
Reaction time
Braking time
How long does it take for air to pass through a properly maintained air brake system?
About 1 second
About 2 seconds
About 4/10 of a second
About 1/2 of a second
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