Unit 302 Level 3 Engineering principles

Q1 Referring to the table shown below, what is the correct drill size for tapping an M20 thread?

• A) 2.50

• B) 22.25

• C) 17.50

• D) 19.50

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

• A) Pie chart.

• B) Gantt chart.

• C) Bar graph.

• D) Line graph.

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

• A) A rough sketch.

• B) An isometric projection.

• C) An orthographic projection.

• D) A production pattern.

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

• A) Annealing.

• B) Hardening.

• C) Normalising.

• D) Tempering.

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

• A) Hardened diamond pyramid.

• B) Hardened steel ball.

• C) Hardened diamond cone.

• D) Hardened 1.6 mm diameter steel ball.

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

• A) Phosphating.

• B) Tin plating.

• C) Galvanising.

• D) Anodising.

What type of loading stress results in fatigue failure?

• A) Tensile.

• B) Bend.

• C) Cyclic.

• D) Compressive.

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

• A) Tensile.

• B) Indentation.

• C) Toughness.

• D) Fatigue.

What is the ISO unit for energy?

• A) Candela.

• B) Newton.

• C) Watt.

• D) Joule.

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).

• A) 750

• B) 47.5

• C) 4.8

• D) 0.208