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Mechanisms CAMS (70 cards)

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1
Q

What is a mechanism?

A

A mechanism is a system of parts working together in a machine.

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2
Q

True or False: A gear is a type of mechanism.

A

True

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3
Q

Fill in the blank: The primary function of a mechanism is to convert __________.

A

motion

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4
Q

What are the two main types of motion in mechanisms?

A

Linear and rotary motion.

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5
Q

Multiple choice: Which of the following is NOT a type of lever? A) First class B) Second class C) Third class D) Fourth class

A

D) Fourth class

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6
Q

What is a cam?

A

A cam is a rotating or sliding piece in a mechanical linkage used to convert rotary motion into linear motion.

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7
Q

True or False: Pulleys can only be used to lift heavy objects.

A

False

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8
Q

What is the purpose of a pulley system?

A

To change the direction of force and reduce the amount of force needed to lift an object.

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9
Q

Fill in the blank: A __________ is a simple machine that consists of a wheel on an axle.

A

wheel and axle

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10
Q

Multiple choice: Which mechanism is used to convert rotary motion into linear motion? A) Gear B) Cam C) Lever D) Pulley

A

B) Cam

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11
Q

What is a crank?

A

A crank is a lever attached at a right angle to a rotating shaft.

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12
Q

True or False: The output speed of a gear train can be faster than the input speed.

A

True

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13
Q

What is the function of a ratchet mechanism?

A

To allow motion in one direction while preventing motion in the opposite direction.

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14
Q

Fill in the blank: A __________ mechanism is used to amplify force.

A

lever

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15
Q

Multiple choice: Which type of lever has the load in the middle? A) First class B) Second class C) Third class D) Fourth class

A

B) Second class

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16
Q

What is a linkage?

A

A linkage is a system of connected parts that transmit motion.

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17
Q

True or False: A belt drive can transmit power between non-adjacent shafts.

A

True

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18
Q

What does a gear ratio determine?

A

The relationship between the input speed and output speed of gears.

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19
Q

Fill in the blank: The __________ of a lever is the distance from the fulcrum to the point where the force is applied.

A

effort arm

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20
Q

Multiple choice: Which of the following mechanisms is used to lift loads vertically? A) Gear B) Pulley C) Cam D) Crank

A

B) Pulley

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21
Q

What is the main advantage of using a compound pulley?

A

It reduces the amount of force needed to lift an object.

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22
Q

True or False: A simple machine can only perform one type of mechanical advantage.

A

False

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23
Q

What is a toggle mechanism?

A

A mechanism that uses a lever to create a rapid change in motion or force.

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24
Q

Fill in the blank: The __________ of a wheel and axle is the ratio of the radius of the wheel to the radius of the axle.

A

mechanical advantage

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25
Multiple choice: What type of motion does a screw convert? A) Linear B) Circular C) Both A and B D) None of the above
C) Both A and B
26
What is the function of a spring in a mechanism?
To store and release energy.
27
True or False: A bevel gear can transmit motion at a right angle.
True
28
What is a rack and pinion mechanism used for?
To convert rotary motion into linear motion.
29
Fill in the blank: The __________ of a gear describes its teeth.
pitch
30
Multiple choice: Which mechanism is commonly used in a bicycle? A) Gear B) Pulley C) Lever D) All of the above
D) All of the above
31
What type of lever is a seesaw an example of?
First class lever.
32
True or False: The more gears used in a gear train, the less torque is produced.
False
33
What is the role of a flywheel in a mechanism?
To store rotational energy and smooth out the delivery of power.
34
Fill in the blank: A __________ is a device that allows for the controlled movement of an object.
mechanism
35
Multiple choice: Which of the following is a common application of a belt drive? A) Cars B) Elevators C) Conveyors D) All of the above
D) All of the above
36
What is the difference between a fixed and a movable pulley?
A fixed pulley changes the direction of force, while a movable pulley reduces the amount of force needed.
37
True or False: A gear's direction of rotation can be reversed by changing the orientation of the gear train.
True
38
What is a chain drive?
A mechanism that uses a chain to transmit power between two or more sprockets.
39
Fill in the blank: The __________ of a cam determines the path of the follower.
profile
40
Multiple choice: Which mechanism is best for transferring power over long distances? A) Gear B) Pulley C) Chain D) Lever
C) Chain
41
What is a torque?
A measure of the rotational force applied to an object.
42
True or False: All mechanisms are classified as either simple or complex.
True
43
What is the purpose of a tensioner in a belt system?
To maintain proper tension in the belt.
44
Fill in the blank: A __________ gear is used to change the direction of motion in a gear train.
bevel
45
Multiple choice: What type of mechanism is used in a hydraulic press? A) Mechanical B) Pneumatic C) Both A and B D) None of the above
C) Both A and B
46
What is the primary advantage of using gears?
To increase or decrease speed and torque.
47
True or False: The input and output speeds of a gear system are always the same.
False
48
What is the relationship between effort and load in a lever?
The effort is the input force applied to the lever, while the load is the weight being lifted.
49
Fill in the blank: The __________ of a lever is the point around which it rotates.
fulcrum
50
Multiple choice: Which mechanism can provide a mechanical advantage? A) Lever B) Gear C) Pulley D) All of the above
D) All of the above
51
What is a worm gear?
A gear consisting of a screw (worm) that turns a gear wheel.
52
True or False: A hydraulic system uses liquids to transmit force.
True
53
What is a mechanical advantage?
The factor by which a machine multiplies the force applied to it.
54
Fill in the blank: The __________ of a gear is the distance between corresponding points on adjacent teeth.
pitch circle diameter
55
Multiple choice: Which of the following is an example of a complex mechanism? A) Lever B) Gear train C) Pulley D) None of the above
B) Gear train
56
What is the purpose of a check valve in a hydraulic system?
To allow fluid to flow in one direction only.
57
True or False: The efficiency of a mechanism is the ratio of useful output to total input.
True
58
What is a pneumatic mechanism?
A mechanism that uses compressed air to transmit force.
59
Fill in the blank: The __________ of a pulley system determines how much weight can be lifted.
mechanical advantage
60
Multiple choice: Which mechanism uses levers and gears to amplify force? A) Hydraulic press B) Screw C) Crank D) None of the above
A) Hydraulic press
61
What is a linkage mechanism?
A system of connected components that transmit motion from one part to another.
62
True or False: All mechanisms require energy input to function.
True
63
What is a drive belt?
A looped strip of flexible material used to transmit power from one rotating shaft to another.
64
Fill in the blank: The __________ is the part of a mechanism that converts input motion into output motion.
actuator
65
Multiple choice: Which mechanism is most commonly used in vehicles for power transmission? A) Chain drive B) Belt drive C) Gearbox D) All of the above
D) All of the above
66
What is the function of a bearing in a mechanism?
To reduce friction between moving parts.
67
True or False: The greater the distance from the fulcrum, the less effort is needed to lift a load.
True
68
What is a slider-crank mechanism?
A mechanism that converts rotary motion into linear motion using a slider and crank.
69
Fill in the blank: The __________ of a screw is the distance between threads.
pitch
70
Multiple choice: Which type of mechanism is used in a clock to keep time? A) Gear train B) Pulley C) Lever D) All of the above
A) Gear train

yr11 core theory (2 decks)

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