This page shows a set of examples of test questions that use images produced on the MDA as answer sheets.
Question 1
From a rough diamond with a square cross section (shape 1), a jeweller can choose to cut a diamond with either a more obtuse angle at the bottom (shape 2) or more acute angle (shape 3).
On the answer sheet, construct the beam of light that exits the diamonds of shape 2 and 3.
Question 2
Safety regulations for electric fences state that:
1. The voltage must stay below 10 kV.
2. The duration of a pulse must stay below 10 ms.
3. The maximum electric current must stay below 15 A at both 100 Ω and 500 Ω resistance.
4. The energy in one pulse must stay below 6 J.
1. The voltage must stay below 10 kV.
2. The duration of a pulse must stay below 10 ms.
3. The maximum electric current must stay below 15 A at both 100 Ω and 500 Ω resistance.
4. The energy in one pulse must stay below 6 J.
The graph on the answer sheet shows the voltage pulses for different resistances.
Use the graph to show that the electric fence complies with the safety regulations.
