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. One is the trigonometric value of...






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






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

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






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






6. 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






7. Malleable cast iron is produced by...






8. A straight line that joins 2 points or circumference






9. Acute angle






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






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






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






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






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






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






16. P & IDs






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






18. 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






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






20. A quadrilateral with no parallel sides






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






22. The classes of fastening devices are...






23. 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.






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






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






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






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






28. Sine Rule






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






30. Energy can be...






31. 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...






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






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






34. As the cosine decreases - the...






35. 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)






36. Kinetic energy (Ek)






37. A parallelogram with four equal sides






38. Resistance to wear - abrasion and penetration






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






40. A closed plane figure bounded by straight sides






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






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






43. Factor of safety






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






45. 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






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






47. Protons have a mass number of...






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






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






50. Work per second