Level 3 Principles of Engineering

Referring to the table shown, what is the correct drill size for tapping an M20 thread?

• 17.50

• 22.50

• 17.00

• 22.00

What is the most appropriate method to clearly show relative data sizes?

• Bar chart.

• Line graph.

• Pie chart.

• Bar graph.

Which is the most appropriate type of engineering drawing for representing a three dimensional component?

• A rough sketch.

• An orthographic projection.

• An isometric projection.

• A production pattern.

Which heat treatment process produces steel in its most malleable condition?

• Hardening.

• Normalising.

• Tempering.

• Annealing.

What type of indenter is used in a Brinell hardness test?

• Hardened 1.6 mm diameter steel ball.

• Hardened diamond cone.

• Hardened steel ball.

• Hardened diamond pyramid.

What process enhances the corrosion resistance of aluminium by thickening its oxide layer?

• Anodising.

• Galvanising.

• Tin plating.

• Phosphating.

What type of loading stress results in fatigue failure?

• A) Tensile.

• Cyclic.

• Bend.

• Compressive.

Which testing method is used to determine the ductility of a material?

• Tensile.

• Indentation.

• Toughness

• Fatigue.

What is the ISO unit for energy?

• Candela.

• Watt.

• Joule.

• Newton.

A steel block sitting on a steel plate requires 12.5 N to move it across the plate. If the normal force between the block and the plate is 60 N, calculate the coefficient of friction (µ).

• 0.208

• 750

• 47.5

• 4.8