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. Reflex angle






2. The classes of fastening devices are...






3. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...






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






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






6. When the co- efficient of friction increases and the force between two surfaces remains constant - the friction force will






7. Means that the sum of the matter leaving the plant equals the sum of the matter entering






8. 1. In a right angle triangle - the sine of an acute angle is equal to...






9. PFDs






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






11. A parallelogram with four equal sides






12. Is the required to change a unit mass from a gas to liquid or liquid to a gas






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






14. A quadrilateral with no parallel sides






15. The ratio of the density of a substance to the density of a standard substance at the same temperature and pressure - the ratio of the density of the substance to the density of the substance to the density of water






16. Right angle






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






18. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...






19. Resists oxidation - high strength at high temperatures - increases hardness and abrasion resistance without increasing brittleness - increases response to heat treatment - increases depth of hardness penetration - at 12% chromium steel with not tarni






20. The ability to return to its original shape after an external force has been removed






21. Compounds classified as salts may have the following characteristics






22. Force






23. Potential energy (Ep)






24. Acute angle






25. A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it A = piab or A = pi(1/2D)(1/2d) - same as = (pi/4)D/d






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






27. Cosine rule






28. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...






29. A parallelogram with adjacent sides of unequal lengths






30. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)






31. Pythagoras' Theorem






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






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






34. 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






35. Kinetic energy (Ek)






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






37. 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)






38. Ratio of the opposite to the adjacent side of a right- angled triangle






39. Pre- construction - shows graphically the mechanical design engineer's work - during construction - proper location - reference to all equipment - after construction - training reference anddetails of process - utility and electrical systems






40. P & IDs






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






42. The act or process of measuring






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

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44. Energy can be...






45. According to Hooke's Law - the stress in an elastic body is directly proportional to the strain if...






46. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands






47. Whether a material will break under sudden impact or hard blow






48. Expansion of a gas is said to be adiabatic when expansion takes place at...






49. PVn(super script n) = C






50. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...