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. Potential energy (Ep)






2. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)






3. Mechanical efficiency






4. 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






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






6. The act or process of measuring






7. 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






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






9. 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






10. PFDs






11. Protons have a mass number of...






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






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






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






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






16. Work per second






17. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known






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






19. A straight line that joins 2 points or circumference






20. 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?






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






22. All sides equal - all angles are equal and opposite sides parallel - divided into 6 ISOSCELES triangles - each angle in an octagon is 135 - A = 4.83s2






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






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






25. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10






26. 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






27. A parallelogram with four equal sides






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






29. Sine Rule






30. Work per power stroke (J)






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






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






33. PVn(super script n) = C






34. As the cosine decreases - the...






35. Area of a segment






36. Right angle






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






38. A triangle with two equal sides






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






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






41. Force






42. coefficient of volumetric expansion

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43. 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






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






45. Copper fails due to...






46. A triangle with no two sides of equal length






47. Energy can be...






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






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






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