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






2. PVn(super script n) = C






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






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






5. A straight line that joins 2 points or circumference






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






7. A triangle with no two sides of equal length






8. Compounds classified as salts may have the following characteristics






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






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






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






12. 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






13. A triangle with two equal sides






14. A parallelogram with adjacent sides of unequal lengths






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






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






17. Pythagoras' Theorem






18. 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






19. P & IDs






20. Right angle






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






22. The classes of fastening devices are...






23. Four pieces of iron are heated in a furnace to high temperatures. The one at the highest temperature would appear






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






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






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






27. A body having a gravitational force of 2000 N - is pulled along a horizontal surface at constant speed by a rope that makes an angle of 20






28. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second






29. The temperature of saturated steam vapor at 980 kPa is...






30. Potential energy (Ep)






31. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will






32. Reflex angle






33. A quadrilateral with two parallel sides






34. Protons have a mass number of...






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






36. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal






37. 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






38. A quadrilateral with no parallel sides






39. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2






40. One is the trigonometric value of...






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






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






43. A parallelogram with four equal sides






44. Malleable cast iron is produced by...






45. Factor of safety






46. A displacement of 9 m north of point A - and another of 6 m west of point A can be added to give a resultant displacement from point A of...






47. Straight angle






48. Sine Rule






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






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