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WorksheetsPOE - Mechanics
Total questions: 15
Worksheet time: 8mins
What does speed describe in terms of movement?
How heavy an object is
How far an object will travel over a period of time
The color of an object
The shape of an object
Which of the following is a unit of speed?
Kilograms
Liters
Feet/Second
Celsius
Which of the following is a unit of force?
Newton
Joule
Watt
Pascal
Which component is more likely to be used for quiet operations?
Gears/Sprockets
Pulleys
Chains
Belts
What happens to speed when a driving gear is smaller than the driven gear? (Draw yourself a picture)
Speed increases
Speed decreases
Speed remains the same
Speed doubles
What is the relationship between gear size and speed in a gear system?
Larger gear increases speed
Depends on the gear size ratio of the driven and driving gears.
Gear size does not affect speed
Both gears increase speed
What happens to torque when a driving gear is smaller than the driven gear? (Draw yourself a picture)
Torque increases
Torque decreases
Torque remains the same
Torque halves
What is the effect on speed and torque when the driving gear and driven gear are the same size? (Draw yourself a picture)
Speed increases, torque decreases
Speed decreases, torque increases
No change in speed or torque
Both speed and torque decrease
In a 3:1 ratio, how many full rotations does the driven gear make, if the driving gear rotates one full rotation?
3
1.5
2
1/3
In which gear system does the gear move along a linear path?
Bevel
Rack and Pinion
Spur
Planetary
Which gear type is often used in car steering mechanisms?
Planetary
Bevel
Rack and Pinion
Worm
If a robot is traversing across a manufacturing floor at a constant speed of 15 ft/sec, calculate the acceleration of that robot.
15 ft/sec^2
7.5 ft/sec^2
0 ft/sec^2
30 ft/sec^2
What type of power transmission does not reverse direction of rotation?
Simple Gear Train
Chain and Sprocket
Compound Gear Train
Gear train with four gears
What is an advantage of using gears/chain and sprockets over pulleys?
Quieter operation when in use
More likely to slip under load
They reverse the direction of rotation
Highly unlikely to slip under load
How should a gear ratio always be written?
# : 1
Some number greater then 1 : 1
Must be in decimal form, example - .5 : 1
1 : #
