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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. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change






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






3. Factor of safety






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






5. Acute angle






6. A quadrilateral with no parallel sides






7. PVn(super script n) = C






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






9. Area of a segment






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. Force - work done - power - mechanical efficiency






12. 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.






13. 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






14. Malleable cast iron is produced by...






15. coefficient of volumetric expansion

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






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






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






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






20. A closed plane figure bounded by straight sides






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






22. Cosine rule






23. Work per second






24. Obtuse angle






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






26. 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...






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






28. Protons have a mass number of...






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






30. Orthographic projection means...






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






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






33. Steam turbine bearings are usually made of...






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






35. 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






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






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






38. As the cosine decreases - the...






39. Micro organisms promote corrosion...






40. 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...






41. 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






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






43. The force that is equal in magnitude but opposite in direction to the resultant force is called






44. 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






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






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






48. coefficient of superficial (area) expansion






49. Right angle






50. A parallelogram with adjacent sides of unequal lengths







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