Multiple Choice Question (MCQ)
Question: What is the working pressure usually made on joints for pressure test?
A.
5 kg/cm<sup>2</sup>
B.
6 kg/cm<sup>2</sup>
C.
8 kg/cm<sup>2</sup>
D.
10 kg/cm<sup>2</sup>
Correct Answer: 10 kg/cm<sup>2</sup>
Explanation
The area of each of the A paper sizes are set by the A paper size definitions. A0 is defined as having an area of 1 square metre, however the A paper size standard also specifies that each size is rounded to the nearest millimetre.
Thus A0 is 841 mm x 1189 mm giving an area of 0.999949 square metres. Approximately surface area of A0 size sheet is One Square Meter.