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Basic Engineering > Mock Test > Flashcards

Mock Test Flashcards

1
Q

Why is a pilot drill used prior to drilling large holes?

A

To provide clearance for the chisel tip.

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2
Q

Oil and water emulsion is the recommended cutting fluid for which material?

A

Steel

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3
Q

What are the two types of drill shanks?

A
  • Tapered shank

- Parallel shank

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4
Q

What are the two types of flutes found on reamers?

A
  • Straight

- Spiral

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5
Q

Why are pencils and crayons not used for marking out on areas that are subject to high temperatures?

A

They can leave carbon deposits, leading to carbonisation and embrittlement.

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6
Q

When must an instantair swivel coupling be lubricated?

A

Following immersion in a solvent/degreasing liquid using machine oil

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7
Q

What is the fatal air pressure?

A

4 PSI

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8
Q

What two materials are Pop Rivets made from?

A
  • Aluminium Alloy

- Monel Metal

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9
Q

What two types of mandrel are there on Pop Rivets?

A
  • Break Head

- Break Stem

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10
Q

Which two tools are used to fit Pop Rivets?

A
  • PS15 Pop Pliers

- TT4D Lazy Tongs

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11
Q

What are the 3 common Rivet patterns?

A
  • Single Row
  • Double Row
  • Staggered Row
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12
Q

What is the minimum pitch allowed between rivets?

A

4D

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13
Q

When riveting, what does ‘Land’ refer to?

A

The distance between the edge of the material and the centre of the rivet.

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14
Q

What is the accuracy of a Metric Micrometer?

A

0.01mm

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15
Q

What is the accuracy of an Imperial Micrometer?

A

0.001”

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16
Q

What is the accuracy of a Vernier Caliper in both Metric and Imperial scales?

A
  • 0.02mm

- 0.001”

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17
Q

What is the smallest measurement a Vernier Bevel Protractor can measure?

A

5 minutes

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18
Q

What does a Dial Test Indicator measure?

A

Variations between high and low areas on a component

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19
Q

How many minutes equal 1 degree on a Vernier Bevel Protractor?

A

60 minutes

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20
Q

What Vernier principle does Vernier Calipers work from?

A

49/50

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21
Q

What principle does the Vernier Bevel Protractor work on?

A

23/12

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22
Q

What is the accuracy of a DTI in Metric and Imperial?

A
  • 0.01mm

- 0.001”

23
Q

What does a Surface Texture Comparison Plate do?

A

They have a range of machines surfaces to measure the finish of your own piece again, using RA (Roughness Average)

24
Q

In calibration, what is the yellow sticker used for?

A

‘Valid Calibration Label’

MOD Form 1775A

25
Q

In calibration, what is the blue sticker used for?

A

‘Calibration not maintained’

MOD Form 1778

26
Q

In calibration, what is the white sticker with orange borders used for?

A

‘Calibration not required’

MOD Form 1780

27
Q

What are standard twist drills made from?

A

High speed steel

28
Q

How are standard twist drills classified?

A
  • Shank Type
  • Length
  • Material
  • Diameter
29
Q

What are the 3 main functions of flutes?

A
  • Present the cutting edge of the drill at the right angle.
  • Allows sworf to be removed
  • Allows cool air and coolant in to the hole
30
Q

What is land in reference to a drill?

A

The narrow strip that runs along the length of each flute

31
Q

What is a Combination Centre Drill used for?

A

Cuts a small 60 degree countersink into a workpiece to aid in the start of drilling

32
Q

What are cobalt drills used for?

A

They are used when drilling hard materials, however they are very brittle.

33
Q

Where would you find the size of a drill?

A

The diameter is usually etched or stamped on the shank or neck of the drill

34
Q

When are hand drills used?

A

Where power drills are not available and/or limited accuracy is required.

35
Q

What is countersinking?

A

A drilling process to create an angled recess specific to the head of a screw or rivet.

36
Q

What are reamers used for?

A

They are used to enlarge drilled holes to accurate dimensions.

37
Q

On reamers, what direction do they twist and why?

A

Anti-clockwise, to prevent the reamer from being pulled into the hole by machine rotation

38
Q

What is a popular method for producing a round hole in a piece of sheet metal?

A

A Q-Max Cutter

39
Q

From how far away can compressed air penetrate the skin?

A

From up to 38cm away.

40
Q

What are the two types of permanent marking?

A
  • Metal Stamping

- Machine Engraving

41
Q

What can metal stamping do to the material?

A

Cause a reduction of fatigue resistance and cause premature failure or breakage

42
Q

When can stamping not be used?

A
  • On Aluminium Alloy thinner than 20SWG
  • On high stress areas of steel
  • Where doubt exists, due to the size or stress of the piece
43
Q

What shape should the stamp produce and why?

A

Stamps should produce a ‘U’ shape rather than a ‘V’ shape to put less stress on the material

44
Q

What is the tip of engraving tools made from?

A
  • Solid Carbide

- Carbide Tipped Steel

45
Q

What are solid rivets?

A

Rivets that are used when there is access to both sides of a material and have a preformed head

46
Q

What are Blind Rivets?

A

Rivets that are used when you only have access to one side of a piece.

47
Q

What are rivets used for?

A

Joining sheet metal together

48
Q

What are the types of head on a river?

A
  • Domed

- Countersunk

49
Q

How are POP Rivets identified?

A

Using the manufactures reference or by the Aircraft General Standards (AGS) code.

50
Q

In POP Rivet identification, what does the code:

TLP/D/BS420

mean?

A 
T = Tucker
L = Monel Metal
P = POP Rivet
D = Domed Head 
BS = Break Stem
4 = Diameter
20 = Length
51
Q

What two basic types of riveted joints are there?

A
  • Lap joints

- Butt joints

52
Q

What does the pitch refer to when riveting?

A

The distance between the centre of rivets.

53
Q

What is the land for sheet metal above and below 18SWG?

A
  • 18SWG+ = 2D

- Below 18SWG = 2.5D

54
Q

How can you remove a faulty pop rivet?

A

Using a small drill to remove the centre of a rivet

Basic Engineering (1 decks)

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