1.
A gear system consists of a small gear with 10 teeth and a larger gear with 40 teeth. If the small gear turns once, how many times does the larger gear turn?
1/4
1/2
1
4
2.
What is the primary function of a flywheel in a mechanical system?
To increase speed
To store energy
To reduce friction
To change direction
3.
In a system of gears, what happens to the speed of rotation of the output gear if it has fewer teeth than the input gear?
It rotates faster.
It rotates slower.
It does not affect speed.
It stops rotating.
4.
Which of the following tools is best suited for measuring the inside diameter of a pipe?
Tape measure
Caliper
Protractor
Plumb bob
5.
Two gears are meshed together. The larger gear has 40 teeth, and the smaller gear has 20 teeth. If the larger gear rotates at 60 revolutions per minute (RPM), what is the rotational speed of the smaller gear?
30 RPM
60 RPM
120 RPM
240 RPM
6.
What is the mechanical advantage of a pulley system with three pulleys?
1
2
3
6
7.
Which of the following statements about friction is true?
Friction always produces heat.
Friction increases with the weight of the object.
Friction is independent of surface area.
All of the above.
8.
Which of the following is NOT a type of simple machine?
Lever
Pulley
Wheel and axle
Engine
9.
Which of the following materials has the highest tensile strength?
Copper
Aluminum
Steel
Brass
10.
Which type of energy is primarily converted to mechanical energy in an internal combustion engine?
Thermal energy
Electrical energy
Kinetic energy
Potential energy
Questions Answered: 0/10
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