Construction Problems MOCK Exam 5

Calculate the area of a rectangular plot of land that measures 50 feet by 30 feet.

• 1500 square feet

• 1200 square feet

• 1800 square feet

• 1000 square feet

A cylindrical water tank has a radius of 3 metres and a height of 5 metres. Calculate its volume.

• 141.37 cubic metres

• 94.25 cubic metres

• 47.12 cubic metres

• 235.62 cubic metres

Using Pythagoras' theorem, find the length of the hypotenuse of a right-angled triangle with legs measuring 6 metres and 8 metres.

• 10 metres

• 12 metres

• 14 metres

• 15 metres

In a system of coplanar forces, if two forces of 5 N and 12 N act at an angle of 90 degrees to each other, what is the resultant force?

• 13 N

• 17 N

• 7 N

• 10 N

Three concurrent forces of 10 N, 15 N, and 20 N act on a point. If the angle between the 10 N and 15 N forces is 90 degrees, what is the magnitude of the resultant force?

• 25 N

• 30 N

• 35 N

• 40 N

Calculate the stress in a steel rod with a cross-sectional area of 0.01 square metres subjected to a force of 1000 N.

• 100,000 Pa

• 10,000 Pa

• 1,000,000 Pa

• 1000 Pa

A beam is simply supported at both ends and carries a uniformly distributed load. What is the reaction at each support if the total load is 2000 N?

• 1000 N

• 2000 N

• 500 N

• 1500 N

For a simply supported beam with a point load at the centre, what is the maximum shear force?

• Equal to the point load

• Half of the point load

• Twice the point load

• Zero

If the outside temperature is 5°C and the inside temperature is 20°C, what is the temperature gradient across a wall 0.5 metres thick?

• 30°C/m

• 25°C/m

• 15°C/m

• 10°C/m