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IPC Review-Work And Machines
Test Description: IPC Review-Work and Machines
Instructions: Answer all questions to get your test result.
1) For work to occur, an object must
A
remain still
B
move
C
be alive
D
be powerful
2) Which of these is the amount of work done in a certain amount of time?
A
force
B
power
C
machine
D
effort
3) _____________ increase applied force and/or change direction of force to make work easier.
A
machines
B
powers
C
directions
D
forces
4) Power is measured in ____________.
A
watts
B
calories
C
amps
D
friction
5) _________ is the number of times a machine multiplies the effort force.
A
efficiency
B
mechanical advantage
C
fulcrum
D
output
6) Levers, pulley, screws, and inclined planes are all
A
wedges
B
simple machines
C
compound machines
D
gears
7) A machine that does work with only one movement is a
A
pulley
B
compound machine
C
block and tackle
D
simple machine
8) ____________ is a measure of how much of the work put into a machine is changed into useful output work by the machine.
A
mechanical advantage
B
work
C
efficiency
D
power
9) ______________ is force X distance.
A
efficiency
B
resistance
C
power
D
work
10) In machines, some energy is changed to heat due to
A
power
B
friction
C
effort
D
work
*select an answer for all questions
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