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WorksheetsEngineering Technology September 2022 2
Total questions: 11
Worksheet time: 55mins
Choose the correct answer........
A ………… is a tool used to cut internal threads in a drilled hole.
Tap
Outside Micrometer
Depth Micrometer
Centre punch
Choose then correct answer........
The …………… switch is only used when drilling into concrete, brick or other masonry materials.
Hammer Action
Centre Punch
Pin Punch
Outside Micrometer
Choose then correct answer........
…………. is mainly used to measure the outside diameter or external size of an object.
Outside Micrometer
Depth Micrometer
Inside caliper
Outside caliper
Choose then correct answer........
The ………… is supplied with several interchangeable rods for accurately measuring different depths.
Depth Micrometer
Inside Micrometer
Outside Micrometer
Vernier Caliper
Choose then correct answer........
A ……….. is used to mark the centre of holes to be drilled.
Centre punch
Aligning punch
Pin punch
Dotting punch
You are asked to manufacture the MACHINE BLOCK (FIGURE 1) below. Study the diagram and answer the questions that follow.
Name the power tool that you would use to obtain an accurate hole of diameter 8 mm at point A.
HINT: The use of a portable drilling machine is NOT allowed due to the high accuracy needed.
(a)
From a safety perspective, when using a pedestal drilling machine, you must ensure the following .......
Wear safety goggles
Wear a hairnet
Wear a helmet
Tuck away loose clothing
Explain what is meant by the term M10 as indicated at point B.
M10 indicates that the hole has threads cut with an M10 tap.
M10 means micro 10 mm
M10 Means metric nuts
M10 indicates the hole has a depth of 10 mm
After the hole has been drilled to the correct size at point B (M10), name the hand tools that you would require to make the hole
A set of M10 Taps and a Tap wrench.
A Tap
A die
A hacksaw
Explain what will happen if the drilled hole at point B is too small
The tap will break
The tap will fall through the hole
Nothing will happen
The tap will fit perfect in the hole
Explain what will happen if the drilled hole at point B is drilled too big
The tap will fall through the hole
The tap will break
Just right
The tap will fit perfect into the hole
