Mechanisms Flashcards

1
Q

What motion does a Crank and Slider convert?

A

Converts movement from circular motion to reciprocating motion.

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2
Q

Applications of pulleys?

A

Inside cranes, washing machines.

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3
Q

First class lever?

A

Load, fulcrum, effort.

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4
Q

What is a bevel gear?

A

Bevel gears are gears that transmit motion through 90degrees.

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5
Q

Application of bevel gears?

A

Food mixers, car gear boxes.

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6
Q

What are the 3 functions of mechanisms?

A

To transmit motion, to convert motion, to control motion.

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7
Q

Example of a first class lever, 2nd class and 3rd class lever?

A

Sisscors, nut cracker and skip loader.

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8
Q

4 types of movement?

A

Recipocating, osciliating, linear, circular.

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9
Q

3 types of cams?

A

Pear cam, snail cam and eccentric cam.

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10
Q

Rack and pinion conversation of motion?

A

It converts rotary motion to linear motion or the other way round.

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11
Q

Applications of rack n pinion?

A

Steering wheel, cdrom drive.

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12
Q

Function of ratchet and pawl?

A

It allows movement in one direction only.

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13
Q

Applications of ratchet and pawl?

A

Clocks, bicycles.

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14
Q

4 types of springs?

A

Compression spring, tension spring, torsion spring and flat spring

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15
Q

What force can a compression spring resist and what is its application?

A

It can resist a squashing force and is used in bicycle’s suspension.

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16
Q

What force is a tension slring used to resist and what is its application?

A

It is used to resist a streching (tensile) force and is used in trampolines.

17
Q

What force does a torsion spring resists and what is its application?

A

It resists a turning force (torque) and is used in a foot pump.

18
Q

What is a flat spring and what is its application?

A

A flat spring is a spring that returns to its original shape when bent and are used in staplers.

19
Q

4 functions of a structure?

A

Spanning between points, protecting things, containing things, supporting a load.

20
Q

4 types of bridge?

A

Cable-stayed bridge, arc bridge, suspension bridge, beam bridge