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Technology GCSE.Year11 > UNIT 1 Exam > Flashcards

UNIT 1 Exam Flashcards

1
Q

What is an electronic control system?

A

Its when a input device sends an electrical current of information to the electrical controller which then sends it to the ouput device.
Camera -> Computer -> Printer
take picture ->Digitalize it-> Print the picture

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2
Q

What is the formula for ohms Law and it’s variations?

A

I = V/R
V = I x R
R = V/I

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3
Q

Resistance
(Letter, Symbol, Meaurment, What is it)

A

R
Ω
Ohms, Kilohms, Megohms
Ω KΩ MΩ
Resistance opposes the current flow.
Resistance comes from Resistors.

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4
Q

Voltage
(Letter, Symbol, Meaurment, What is it)

A

V
V
Volts, Millivolts
V mV
Voltage is what makes the current to flow.
The batteries ‘push’ the current around the circuit.
2 1.5V batteries in a series add together to make 3V but 2 parallel batteries stay at 1.5 but double the life span.
Series = 1 battery connected to another on after another.
Parallel = Current splits into 2 paths, 1 for each battery.
Voltage comes forn any electrical source.

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5
Q

Current
(Letter, Symbol, Meaurment, What is it)

A

I
A
Amps, Milliamps
A mA
This is the flow of charged particles across a conductive wire.

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6
Q

What colour Tolerance band is +/-5%

A

Gold

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7
Q

What colour Tolerance band is +/-10%

A

Silver

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8
Q

Say what the 4 bands on a resistor mean

A

Band 1: 1st Digit
Band 2: 2nd Digit
Band 3: Nr. of Zeros
Band 4: Tolerance %

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9
Q

How do you find the Total Resistance in Series Calculations

A

Rt = R1 + R2 + R3 … etc
Just add all the numbers together

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10
Q

What is SPST

A

Single Pole Single Throw

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11
Q

What is SPDT

A

Single Pole Double Throw

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12
Q

What is SAC and describe it

A

Single Acting Cylinder
It has 1 air passage. When the air is input the single acting cyclider is pushed outwards and the spring inside compresses. When the airflow is removed the air leaves and the spring goes back to normal pushing the cylinder back.

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13
Q

How does the instroke action look like

A

Moving part goes in, hiding itself

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14
Q

How does the outstroke action look like

A

Moving part goes out, revealing itself

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15
Q

What does the 3/2 in a 3/2 valve stand for?

A

3 port
2 position

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16
Q

Name the 3 ports on a 3/2 Valve.

A

Port 1 is main air connection
Port 2 connects to other components
Port 3 is the exhaust

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17
Q

What is used to make a 3/2 valve return to it’s original state automatically?

A

Spring

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18
Q

Name the different actuators for a 3/2 valve

A

Plunger
Push Button
Roller Trip
Lever

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19
Q

How does a 3/2 valve work

A

When the button is pressed the airflow goes from the source to the component connection port
When it is let go the air flow is goes from the connection port to the exhaust port.

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20
Q

Describe OR Logic

A

The Pneumatic system can be accessed from 2 different locations. This is done by using a shuttle valve. If the system is activated from one position then it can’t be activated from another position.
This is Primarly used in order to operate the circuit from 2 different positions.

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21
Q

Describe AND Logic

A

This is when 2 seperate activiation methods must be used in order to activate the main device. This can be done by connectng 1 3/2 Valve to another one making you press both valves down to let the mechansim work.
This is primarly used as a safety feature.

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22
Q

how many connections does a shuttle valve have

A

3

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23
Q

What is located inside a shuttle valve

A

2 funnels
A 3 exit tunnel
1 Ball

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24
Q

How does a shuttle valve work

A

When the airflow is activated in one posititon, the air enters the shuttle valve and pushes the ball into the funnel for the other input vonnection blocking off the other activation method.

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25
Q

What is a shuttle valve used for

A

Shuttle valve is used to operate a device from 2 different positions

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26
Q

What is used to control the speed of the flowing air

A

Unidirectional Flow Restrictor

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27
Q

How does a Unidirectional flow restrictor work?

A

Ball blocks funnel
Tighten screw to slow down the air
Untighten screw to make air flow quicker
When air go opposite way unplugs funnel and leaves quickly
Sometimes they might include a spring inside to help guide the ball bearing

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28
Q

What are the 2 basic ways of transmitting power by using motion

A

Gears
Belt & Pulleys

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29
Q

What is the best way to transmit power via motion (2 basics put together)

A

Chain & Sprockets

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30
Q

What are the different types of belts you can have and give a example where it would be used

A

Vee Belt
Pillar Drill

Round Belt
Vacuum Cleaner

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31
Q

What is the purpose of idler gears

A

To change the next gears spin direction(Clockwise/Anti-Clockwise)

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32
Q

Formula for Gear Ratio

A

⠀ No. of Teeth on Driven
Gear Ratio = ———————————
No. of Teeth on Driver

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33
Q

What is the spin direction difference between gears

A

The next gear always spins the opposite than the previous one

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34
Q

What does big gear to small gear equal in terms of speed

A

Speed Increase

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35
Q

What does small gear to big gear equal in terms of speed

A

Speed Decrease

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36
Q

What are the different types of Cams

A

Eccentric Cam
Heart-Shaped Cam
Pear-Shaped Cam

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37
Q

Name the different types of followers

A

Flat Follower
Knife Follower
Roller Follower

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38
Q

What is it called when there are 2 or more gears put together

A

Mesh Gear

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39
Q

How many different action symbols are there in flowcharts?

A

6

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40
Q

What are the 4 shapes in flow charts?

A

2 lines with a semicircle on each side. (Sausage)
Parallelogram
Rhombus/diamond
Rectangle with curved edges

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41
Q

What are the actions with their symbol in flow charts?

A

2 lines with a semicircle on each side. (Sausage)(2D spherical prism)
Start
Stop

Parallelogram
Output

Rhombus/diamond
Decision
Compare

Rectangle with curved edges
Wait

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42
Q

What is Sir’s rhyme for flow chart symbols?

A

START STOP sausage
Slanted OUTPUT
COMPARE the Diamond DECISION
WAIT for the day we learn enchantment level speech ℸ ̣ ∷|| ℸ ̣ 𝙹 ∷ᒷᔑ↸ ℸ ̣ ⍑╎ᓭ

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43
Q

What do the decision/compare symbols do?

A

They have 2 possibilities yes or no

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44
Q

What do the wait symbols do?

A

Provide a time delay

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45
Q

What are flow charts also known as?

A

Computer control

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46
Q

What is the most important thing in flow chart instructions?

A

Be as precise/exact as possible.

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47
Q

Explain these terms
Stength
Toughness
Hardness

A

Strength - How much of a force can a material withstand before deforming or breaking
Toughness - How much of an impact force can a material absorb
Hardness - How difficult it is to scratch the surface of a material

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48
Q

Name 3 Hardwoods along with their different properties and applications

A

Mahogany
Red brown colour, can be polished and oiled well and can be buffed to a high shine
Floors, furniture and musical instruments

Beech
Very hard and tough
Good for toys and kitchen tools e.g. chopping boards, rolling pins & etc

Oak
Strong, Heavy, Hard & Dense
Furniture, Flooring & Decking

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49
Q

Name 2 Softwoods along with their different properties and applications

A

Pine
Medium Weight & Soft
Moulds, Doors & Railings

Cedar
Spicy Resinous, Scented Wood, noise blocking & Light weight
Fencing, Decking & Siding

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50
Q

Name 3 Man-Made boards along with their different properties and applications

A

Medium Density Fibreboard
dense, flat, stiff, has no knots, and is easily machined
Walls, Doors, Floors & Furniture

Chip Board
More Dense & Stable than solid timber.
Doors, Desks & quite literally anything in IKEA

Plywood
High Impact Resistance, High Strength, Sound insulation
Partitions, Ceilings & Sheathing

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51
Q

Name 4 Thermosetting Plastics along with their different properties and applications

A
  • Melamine
    Very hard, tough surface and highly heat resistant
    Attractive hygienic material. Thin layer placed on MMB or Chipboard.
  • Polyester Resin
    Clear hard resin. Unless reinforced by glass Matt this is very fragile.
    Embedding small objects or when mixed with glass Matt it can be used for boat hulls & car bodies.
  • Epoxy Resin
    Chemical, Heat, Corrosion Resistance. High Compression, Tensile strength.
    Adhesive depending on materials. Vehicles, snowboards, bicycles.
  • Urea Formaldehyde
    High Tensile Strength, Heat, Chemical & Electrical resistance and Hard
    Plug Casing, Electrical Appliances, foam insulation & wrinkle-resistant fabrics
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52
Q

Name 5 Thermoplastics along with their different properties and applications

A

Acrylic
Transparent or Coloured. Hard & Brittle when heated it’s Soft & Flexible. Easily scratched. Good insulator(elect.) & food safe.
Signs, lenses/windows, rear light covers & baths

Rigid Polystyrene
Bright coloured sheets for vacuum forming. Rigid & Hard when heated Soft & Flexible. Brittle
Disposable Containers, Cups, cutlery and plates. Toys, Model kits.

Polyvinyl Chloride (PVC)
Low Rigid, High impact strength, Low Chemical/Heat resistance, low tensile strength.
Window Frames, Pipes, Blood storage bags & Cable Insulation

Acrylonitrile Butadiene Styrene(ABS)
Good Impact, Heat, Chemical, absorption resistant & Tensile Strength. Rigid & Hard
Pipes, Fillings, Keyboard Keys & Legos

Nylon
Elastic, Very strong and Good Chemical resistance. Quick Dry
Tooth Brush, Wheels, Tennis racket Strings, Guitar Strings & Pics

53
Q

Name 3 Ferrous metals along with their different properties and applications(Structure not needed)

A

Mild Steel
Tough, High tensile strength, Easily rusts
Gates, Bikes, Car Bodies

Stainless Steel
Tough, Doesn’t rust, Hygienic.
Sinks, Utensils, aircraft parts, pipes

Carbon Steel
Very high strength & good weld ability
Gears, Bridges, rails & spring

54
Q

Name 3 Non-Ferrous Metals along with their different properties and applications(Structure Not Needed)

A

Aluminium
Good heat & electricity conductor, soft, lightweight
Foil, cans, food packaging & utensils

Brass
Hard, tarnishes rather tan rusting, conducts electro
Plug pins, metallic music instruments, old lamp bodies.

Copper
Amazing electro conductor, ductile, malleable
Wires, pipes, plumbing

55
Q

Properties and uses for Graphene.

A

Good conductor, 200x stronger than steel while light weight and flexible, 2D material
Computer Parts, solar Cells, body armour(Hulk’s Pants)

56
Q

Describe the hardening process

A

Metal is heated up slowly to heat up the whole thing. Focus the heat on the area you wish to harden until it becomes a ‘red hot’ glow.

Remove the work piece from the heat with blacksmith tongs and put into clean cold water. This rapid cooling makes it harder but more brittle.

57
Q

Describe the Tempering Process

A

Clean the work piece with a Emery Cloth and heat again concentrating on the area to toughen. The heated side will become blue, once it travels up the whole workpiece turn off the heat as the blue shows the correct temperature for ‘Tempering’

Place it on a shell surface in order to slowly cool it off. This will make the work piece hard and tough.

58
Q

Describe the Annealing Process

A

Heat the work piece to a certain temperature/colour then allow it to cool slowly. This makes the metal softer allowing for easier machining and cutting.

59
Q

Describe the Normalising process

A

Heat the work piece to a temperature above the critical point then let it cool in the air rather than putting it into water. This is important as this will make uniform grain size but make the metal less ductile.

60
Q

What type of plastic do you use for vacuum forming? Give example

A

Thermoplastics
Rigid Polystyrene
Acrylic

61
Q

Safety precaution for vacuum forming

A

Don’t touch metal parts as they heat up
Make sure plastic doesn’t melt

62
Q

What is the minimum size for a working angle on a vacuum former

A

95°

63
Q

What plastic would you use in a line bending tool machine thing

A

Acrylic

64
Q

Safety precautions for line bending

A

Don’t touch heated wire
Use a jig for repeated accuracy

65
Q

What is a Jig used for

A

Repeated Accuracy

66
Q

Name the 13 tools/assisting tools for marking out. Write what material you would use it in

A

Pencil - Wood
Steel Rule - Wood/Plastic/Metal
Engineer’s Square - Metal
Sliding Bevel - Wood/Plastic
Odd-led Callipers - Plastics
Try Square - Wood/Plastics
Scribe - Metal
Centre Punch - Metal
Spring Dividers - Metal
Marking Knife - Wood
Marking Gauge - Wood
Bradawl - Wood
Engineers Blue - Metal

67
Q

What do you use and engineers square/Trysquare for

A

Marking straight lines at a 90° Angle

68
Q

What is a Sliding Bevel used for?

A

Draw Straight lines at a chosen angle.

69
Q

What is the use of odd-led callipers

A

Mark straight lines in the surface of plastic

70
Q

What is a scribe used for

A

Make scratch marks (draw lines) on metal

71
Q

Centre Punch What is it used for and how to use

A

Used to make indents/punctures/holes in metal so that the drill bit can find the desired hole location
Place it on the point you want to indent then hit with a claw hammer.

72
Q

What is Spring Dividers used for

A

Drawing circles on metal

73
Q

What is a marking knife used for

A

Carving thin indented lines onto wood to make it easier to align the handsaw or chisel

74
Q

What is a Bradawl used for

A

Making indents/small holes in wood to make it easier for the drill bit to find the hole

75
Q

What is engineers blue used for

A

Covers the metal in a blue paint layer
Use it before the scribe in order to make the line more noticeable

76
Q

Name the 3 hand held Saws and what material they are used for

A

Hack Saw - Metal
Tenon Saw - Wood
Coping Saw - Wood/Plastic

77
Q

What the use of a tenon saw

A

Cut straight lines in wood

78
Q

What is the use of a coping saw

A

Cutting curves into wood and plastic

79
Q

What machine is used for cutting lines/sawing

A

Scroll Saw

80
Q

What is a scroll saw used for

A

Cut patterns, Straight or Curved lines into wood & Plastic

81
Q

Name some safety rules for the Scroll Saw

A

Hold the work piece securely
Wear goggles and apron
Keep fingers away from blade
Take of jewelry

82
Q

Name 3 Handheld drills

A

Cordless Drill
Cord Drill
Hand Drill

83
Q

What is the differences between and cord and corless drill

A

Cordless is more portable and runs on a battery so ut can have a better distance
Cord needs to be connected to electricity so you need an extension cord for far distances plus the cord drill can be mucb more powerful than the cordless drill.

84
Q

Which drill doesn’t require any type of electricty to be powered
What type of energy does it use

A

Hand Drill
Kinetic Energy

85
Q

What is the most common machine drill

A

Pillar Drill

86
Q

What is a pillar drill used for

A

Drilling vertical holes in Wood, Metal & Plastic

87
Q

What kind of toothed belt does a pillar drill use

A

Round Belt

88
Q

What aspects of the Pillar drill can be changed

A

Size of the Drill Bit
Spinning Speed of the Machine
Height of Platform

89
Q

What is used to change the drill bit on a pillar drill

A

Chuck

90
Q

Safety rules for the pillar drill

A

1 person in the box at a time
Wear visor and apron
Keep hands away from moving parts
tuck away loose clothes
take of jewelry
Tie Hair Up

91
Q

What are the 4 other types of drill bits

A

Flat Bit
Countersunk Bit
Forstner Bit
Hole Cutter

92
Q

What is a flat tool but used for

A

Cutting large holes in wooden boards

93
Q

What are counter sunk drill bits used for

A

Drill a counter sunk hole for countersunk screws or rivets

94
Q

What is a Forstner bit used for

A

Cut blind holes into wood. Cut holes that won’t go all the way through the material

95
Q

What is a hole cutter drill bit used for

A

Cut large diameter holes in wood boards.
Withdraw regularly to allow wood chips to fall out

96
Q

What are the 3 types of hammers

A

Claw Hammer
Pin Hammer
Ball Pein Hammer

97
Q

What are Claw hammers used for

A

Put nails into wood with one side and take them out with the other side
Used with Centre Punch

98
Q

What are pin hammers used for

A

Putting pins into wood

99
Q

What is the ball pein hammer used for

A

Manually Shaping rivets

100
Q

Name the 3 types of files

A

Flat
Round
Half round

101
Q

On what material are files used on

A

Plastic

102
Q

What are files used for

A

It’s a finishing process for plastic to help shine and even out the sides better

103
Q

What is a plane used for

A

Remove waste material of the surface of wood.

104
Q

What is a vertical sander used for

A

Removing waste material off the face of plastic and wood

105
Q

Safety precaution only for the vertical sander

A

Keep guard down in proper position
Keep hands away from belt
Have work piece flat on table

106
Q

What material is the polisher used for

A

Plastic and metal

107
Q

Safety precaution only for the Polisher

A

Keep hand away from mats
Keep material under the mat
If material falls out of your hands first stop the machine before reaching in to get it

108
Q

What material is used on the milling machine

A

Metal

109
Q

What can be made using the milling machine

A

Slots
Car engine bricks

110
Q

What are lathes used for

A

Cut the outside of a workpiece

111
Q

Which lathe is the large lathe

A

Metal Lathe

112
Q

Which Lathe is the small Lathe

A

Wood Lathe

113
Q

Name 3 different permanent joining methods that use heat and machinery along with their temperature and metal that they would be used on

A

Soft soldering
100°C
Copper Wires

Brazing
450°C+
Zinc, Boron, Stainless Steel

MIG Welding
1650°C
Carbon/Stainless Steel, Copper, Nickel

114
Q

Name different types of Welding

A

Oxy-Acetylene
Spot Welding
MIG Welding

115
Q

What does Spot welding use to join the 2 materials

A

Heat from electricity and pressure

116
Q

What does MIG welding use to join the 2 materials

A

Heat and a filler rod

117
Q

What does Oxy-Acetylene welding use to join the 2 materials

A

A gas mixture of oxygen & Acetylene along with heat.
Filler rod can be used

118
Q

Different types of wood joints

A

Butt joint
Mitre Jount
Housing Joint
Dowel Joint

119
Q

Is riveting semi/permanent

A

Permanent

120
Q

Name the 2 types of riveting

A

Snap Riveting
Pop Riveting

121
Q

What do you use to join plastics together

A

Liquid Solvent Cement

122
Q

How does liquid solvent cement work

A

Triggers a chemical reaction on the surface of the 2 materials causing them to John together

123
Q

Name the semi-permanent joining methods

A

Nuts and washers with bolts
Screws
Knock down fittings
Nails

124
Q

What is fabrication

A

Process of inventing something

125
Q

What is meant by wasting

A

When all the process don’t add any value to the customer

126
Q

Describe mandatory signs

A

Blue and white
Circles

127
Q

Describe prohibited signs

A

White background with black image in the centre and a red circle at the circumference with a diagonal red line from top left to bottom right
Circle

128
Q

Describe Hazard signs

A

White background with red outer lining and black symbol in middle
Diamond

Yellow triangle with black symbol
Triangle

129
Q

Describe safe condition signs

A

Green squares with white image

Technology GCSE.Year11 (5 decks)

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