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






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






3. Acute angle






4. Kinetic energy (Ek)






5. Cosine rule






6. Micro organisms promote corrosion...






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






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






9. Mechanical efficiency






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






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






12. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details






13. The law that states that for a fixed amount of gas at a constant pressure - the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases






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






15. For making steal is done in a pear shaped vessel that refines molten iron from a blast furnace and scrap into steel






16. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only






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






18. One is the trigonometric value of...






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






20. 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






21. 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.






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






23. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies






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






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






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






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






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






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






31. Any two angles whose sum is 90






32. Resistance to wear - abrasion and penetration






33. 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






34. 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






35. P & IDs






36. 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% -






37. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.

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38. A scalar quantity is one which has only magnitude and can be fully described by...






39. Stainless fails due to...






40. 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...






41. A triangle with two equal sides






42. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp






43. A straight line that joins 2 points or circumference






44. 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






45. The moment of a force about a point is...






46. As the cosine decreases - the...






47. Force - work done - power - mechanical efficiency






48. A quadrilateral with no parallel sides






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






50. Malleable cast iron is produced by...







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