1.5 Mechanical Devices & Movement Flashcards by Pashmin Tampal | Brainscape

Q

What are the four types of movement?

A

Oscillation 🐒
Linear ➡️
Rotary 🔄
Reciprocation ↔️

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Q

What are the classifications of levers

A

F
L
E

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Q

Example of class 1 lever

A

Pliers or crowbar

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Q

Example of class 2 lever system

A

Nutcracker or wheelbarrow

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Q

Example of class 3 lever

A

Tweezers

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Q

What is velocity ratio?

A

Distance moved by effort divided by distance moved by load

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Q

What is mechanical advantage?

A

Load divided by effort

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Q

How to calculate efficiency?

A

MA divided by VR x100

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Q

What are the different types of cams?

A

Snail/drop
Pear
Circular

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Q

What are the different followers?

A

Roller
Knife edge
Flat

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Q

What is Velocity ratio in pulleys

A

Driven diameter divided by driver diameter

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Q

Input and output speed

A

Output= input speed/vr

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Q

What are the different types of gears?

A

Simple
Compound
Idler
Rack and pinion
Bevel

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Q

What is the movement of a simple gear?

A

Linear
Opposite directions
Driver
Driven

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Q

What is the movement of a compound gear?

A

Option to switch gears more than one gear to change speed
Cycles

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Q

What is the movement of an idler gear?

A

Clockwise
Anticlockwise
Clock wise

Or

Anticlockwise
Clockwise
Anticlockwise

Q

What is the movement of a Bevel gear?

A

Rotary motion
90 degrees
Input=output
Hand drill

Q

What is the movement of a rack and pinion?

A

Rotary to linear
Pillar drill, printing press