Test your basic knowledge |

Power Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Factor of safety






2. A parallelogram with four equal sides






3. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation






4. The amount of heat required to completely melt 25 kg of ice from a temperature of -10






5. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm






6. A 10 m long steel pipe when heated to increase its temperature by 85






7. u = initial velocity (m/s) - v = final velocity (m/s) - t = time (s) - s = distance (m) - a = acceleration (m/s/s) - g = acceleration due to gravity (m/s/s)






8. Malleable cast iron is produced by...






9. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...






10. Pythagoras' Theorem






11. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.






12. coefficient of expansion






13. Moist hydrogen sulphide environment - hydrogen sulphide must be present - water - even trace amount - high strength steel - steel must be under tensile stress - either applied or residual






14. Right angle






15. The term _____ is used as a measure of the quantity of matter.






16. The act or process of measuring






17. Micro organisms promote corrosion...






18. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.


19. The heat required to raise the temperature of water at a pressure of 225 kPa from 0






20. In the equation 0.004 + D = 0.0042 - the value of D is...






21. P & IDs






22. Work per second






23. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain


24. All sides equal - all angles are equal and opposite sides parallel - divided into 6 ISOSCELES triangles - each angle in an octagon is 135 - A = 4.83s2






25. A quadrilateral with no parallel sides






26. The most common material used in making large industrial diesel engine pistons is...






27. A 1 N weight has a kinetic energy of 1 J when its speed is...






28. A pinch of salt is added to a glass of water. The result is...






29. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree






30. The moment of a force about a point is...






31. When classifying beams - the term simple beam refers to a beam






32. Dangerous because a crack starts slowly and propagate slowly - exceed breaking strength and the metal fails suddenly - stress must be tensile can be produced by an external load or residual stress - condensed moisture and change in temperature






33. The precise measurement of heat flow out of a system for chemical and physical processes






34. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius






35. Protons have a mass number of...






36. Any two angles whose sum is 90






37. Orthographic projection means...






38. Force - work done - power - mechanical efficiency






39. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details






40. In a pipe if no fluid is added or removed - flow must remain constant - due to the product of area and velocity being constant - flow must be the same going in as coming out of pipe






41. PV=nRT - Boyle's law and Charle's law combined






42. The ratio of the weight of an object being moved along a surface and the force that maintains contact between the object and the surface u = tan(thada) - coefficient of friction is equal to the tangent of friction angle






43. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10






44. The factor of safety is always expressed...






45. Obtuse angle






46. Acute angle






47. Ability to withstand deformation above elastic limit under compression without failure






48. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%






49. Cosine rule






50. Negative terminal of the rectifier must always be connected to the structure that is being protected