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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. Refers to change in the position of the body - relative to some reference point - not concerned with actual distance traveled - a vector quantity with magnitude and direction






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






3. A quadrilateral with no parallel sides






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






5. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...






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






7. 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...






8. Of a process or change taking place at constant temperature - PV = C






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






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






11. 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...






12. PFDs






13. Velocity ratio is...






14. coefficient of expansion






15. Factor of safety






16. 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






17. A quadrilateral with two parallel sides






18. The act or process of measuring






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






20. H2SO4 is the chemical formula for...






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






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






23. Mechanical efficiency






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






25. Orthographic projection means...






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






27. Protons have a mass number of...






28. A parallelogram with four equal sides






29. One is the trigonometric value of...






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






31. A triangle with no two sides of equal length






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






33. Sine Rule






34. Any two angles whose sum is 90






35. 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






36. Stainless fails due to...






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






38. Reflex angle






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






40. 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






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






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






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






44. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor






45. Obtuse angle






46. Acute angle






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






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






49. Work per power stroke (J)






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






Can you answer 50 questions in 15 minutes?



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