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Work And Machines
Test Description: Quiz on Chapter 14
Instructions: Answer all questions to get your test result.
1) What is mechanical advantage?
A
The ratio of the output force to the input force.
B
Something that is beneficial out of the input force.
C
The work of the machine.
D
A flat, sloped surface
2) What type of machine is a stapler?
A
1st class lever
B
3rd class lever
C
2nd class lever
D
incline plane
3) What type of pulley uses several pulleys to increase the mechanical advantge?
A
Fixed pulley
B
A fixed movable pulley system
C
Moveable pulley
D
Pulley system
4) What is the equation for mechanical advantage?
A
Output work divided by input work
B
None of these answers.
C
Output force divided by input force.
D
Work divided by distance
5) No matter what type of machine is used the putput force is never....
A
None of these.
B
Less than input force
C
Equal to the input force
D
Greater than the input force
6) Which is not a simple machine?
A
Door stop
B
Door knob
C
Baeball bat
D
Can opener
7) How quickly work is done is called...
A
Work
B
Energy
C
Power
D
Force
8) What is done when a force causes an object to move in the same direction that the force is applied?
A
Efficiency
B
Power
C
Work
D
Force
9) How do you calculate power
A
Work divided by distance
B
Output force divied by input force
C
Force times distance
D
Work divided by time
10) What is the definition of efficiency?
A
Output work divided by input work times 100
B
Input force divided by output force.
C
An inclined plane that moves
D
Force put into a machine
*select an answer for all questions
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