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






2. Compounds classified as salts may have the following characteristics






3. 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






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






5. 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






6. Safe working stress is determined by...






7. Stainless fails due to...






8. 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






9. Protons have a mass number of...






10. Force






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






12. 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






13. 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)






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






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






16. Velocity ratio is...






17. Pythagoras' Theorem






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






19. Reflex angle






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






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






22. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree






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






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






25. Energy can be...






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






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






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






30. 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






31. Straight angle






32. Orthographic projection means...






33. A parallelogram with adjacent sides of unequal lengths






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






35. Force - work done - power - mechanical efficiency






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






37. coefficient of volumetric expansion

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38. Work per second






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






40. A closed plane figure bounded by straight sides






41. A quadrilateral with no parallel sides






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






43. Cosine rule






44. Copper fails due to...






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






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






47. 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?






48. As the cosine decreases - the...






49. A triangle with two equal sides






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







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