Skip to main content

← back to the guide

SQA National 5 Engineering Science Area 3 Mechanisms and structures overview quiz quiz

16questions. Pick an answer and you'll see why right away.

  1. What is the unit of force?

  2. A 30 kg mass is on Earth where g = 9.8 N/kg. What is its weight?

  3. An unbalanced force of 12 N acts on a 4.0 kg trolley. What is its acceleration?

  4. A force of 50 N acts at right angles 0.30 m from a pivot. What is the moment?

  5. A driver gear has 16 teeth and the driven gear has 48 teeth. What is the gear ratio?

  6. A 4:1 reduction gear drive is driven at 800 rev/min. What is the output speed?

  7. Which statement about a belt drive compared with a chain drive is correct?

  8. A pulley drive has a driver pulley of 20 mm and a driven pulley of 80 mm diameter. What is the velocity ratio?

  9. A machine lifts a 800 N load using an effort of 200 N. What is the mechanical advantage?

  10. A machine has a mechanical advantage of 3 and a velocity ratio of 5. What is its efficiency?

  11. Why is a real machine never 100% efficient?

  12. A force of 200 N moves a load 4.0 m in the direction of the force. How much work is done?

  13. A machine does 4000 J of work in 20 s. What is its power?

  14. A force of 600 N acts on a piston of area 0.0030 m squared. What is the pressure?

  15. A structural member that is being stretched (in tension) is called a:

  16. Which property is the opposite of brittleness?