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. Pythagoras' Theorem






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






3. As the cosine decreases - the...






4. Straight angle






5. A parallelogram with adjacent sides of unequal lengths






6. A closed plane figure bounded by straight sides






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






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






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






10. Potential energy (Ep)






11. A triangle with two equal sides






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






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






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






15. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%






16. Area of a segment






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






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






19. Force - work done - power - mechanical efficiency






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






21. 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






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






23. A parallelogram with four equal sides






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






25. Malleable cast iron is produced by...






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






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






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






29. Reflex angle






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






31. 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?






32. PFDs






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






34. 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






35. Safe working stress is determined by...






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






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






38. PVn(super script n) = C






39. The act or process of measuring






40. Acute angle






41. A quadrilateral with no parallel sides






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






43. 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






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






45. 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% -






46. 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






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






48. Work per second






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






50. 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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