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. Force






2. Compounds classified as salts may have the following characteristics






3. The act or process of measuring






4. As the cosine decreases - the...






5. Sine Rule






6. A parallelogram with four equal sides






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






8. Mechanical efficiency






9. A gas occupies 8.62 m3 at 1800 kPa and 26






10. 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






11. 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






12. 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






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






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






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






16. 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)






17. Safe working stress is determined by...






18. When calculating the ultimate stress of a material - we should






19. Resistance to corrosion and oxidation at high temperatures - improves toughness - prevents brittleness at low temperatures - increases strength without affecting toughness - amounts range from 1-4% - high impact resistance at amounts as high as 36% -






20. A 6 m long cantilever beam carries a concentrated load of 45 kN at its free end. What is the shear force at the wall?






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






22. Kinetic energy (Ek)






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






24. A triangle with no two sides of equal length






25. Work per second






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






27. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke






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






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






30. Obtuse angle






31. Change in tempereature where no heat in transferred - PV(supercript v) = C






32. Resistance to corrosion - improved properties at high and low temperatures - lowers coefficient of expansion






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






34. Force - work done - power - mechanical efficiency






35. Straight angle






36. Protons have a mass number of...






37. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)






38. 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






39. The most common thread used in North America on fasteners such as bolts - is the...






40. The most common scale in use is the...






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






42. Resistance to wear - abrasion and penetration






43. Being made of 2 or more substances creating unique characteristics and properties when combine






44. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second






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






46. A closed plane figure bounded by straight sides






47. Testing metals and nonmetals of low to medium hardness. uses a ball that is pressed into material and basis calculations on the diameters of ball and indentation.






48. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...






49. Potential energy (Ep)






50. Micro organisms promote corrosion...