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2.1
Test Description: Work in Mechanical Systems
Instructions: Answer all questions to get your test result.
1) What is the basic equation for work?
A
F * d
B
F * A
C
F/d
D
F/ A
2) The work unit of one joule is equal to
A
1 footpount
B
1 meter
C
1 foot
D
1 newton meter
3) What is the unit of work in the English system
A
newton meter
B
joule
C
ounce
D
foot pound
4) This is equal to the output work divided by the input work times 100%
A
efficiency
B
pressure
C
work
D
force
5) Angles can be represented by
A
all of these
B
radians
C
theta
D
degrees
6) How much work is done by a student when a 500 lb weight is lifted 10 feet?
A
500 * 10
B
500 + 10
C
10 / 500
D
500 / 10
7) How much work is done by a student who holds a 10 pound weight for 30 seconds?
A
300 joules
B
3 newton meters
C
300 foot pounds
D
no work is done
8) What is one revolution equal to?
A
pi
B
3.14
C
0.5 times 3.14
D
2 times 3.14
9) What is the torque exerted on a wrench with a force of 30 pounds if the length of the wrench is 2 feet?
A
60 foot pounds
B
15 foot pounds
C
15 joules
D
60 joules
10) If 1000 joules of work are done using a force of 250 newtons, what distance is the force moved through?
A
1000 divided by 250
B
1000 divided by 250 times 100%
C
250 times 1000
D
250 divided by 1000
*select an answer for all questions
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