DT Flashcards

1
Q

Types of motion

A

Reciprocating
Oscillating
Linear
Rotary

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2
Q

1st class lever + example

A

Effort - fulcrum - load

E.g: crane

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3
Q

2nd class lever

A

Fulcrum - load - effort

E.g: wheelbarrow

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4
Q

Class three lever

A

Load - effort - fulcrum

E.g: fishing rod

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5
Q

Cycle of elliptical cam starting at max displacement (0 degrees)

A

Falls and rises twice with no dwell through one revolution of cam
Displacement diagram = fall, rise, fall rise

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6
Q

Mechanical advantage

A

Output force / input force or length a / length b

/ = divide

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7
Q

Ohms law

A

V= I x R

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8
Q

Impact of small to large pulley

A

Slower output speed

Increased torque

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9
Q

Impact of large to small pulley

A

Faster output speed

Decreased torque

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10
Q

What is the max displacement

A

Centre to furthest bit - centre to shortest bit = max displacement

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11
Q

Tension in beam

A

Arrows pointing away from centre

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12
Q

Compression in beam

A

Arrows pointing towards centre of beam

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13
Q

Resistor diagram

A

Rectangle

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14
Q

Cantilever beam + examples

A

Beam attached to solid surface
Traffic light
Crane

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15
Q

Overhanging beam

A

Two supports, one at centre + one at the end

E.g: diving board

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