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. A straight line that joins 2 points or circumference






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

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






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






5. 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






6. The rate at which heat flow through a slab of a material does not depend on...






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






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






9. Work per power stroke (J)






10. H2SO4 is the chemical formula for...






11. A triangle with no two sides of equal length






12. Area of a segment






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






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






15. Whether a material will break under sudden impact or hard blow






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






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






18. A pinch of salt is added to a glass of water. The result is...






19. 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% -






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






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






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






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






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






25. Straight angle






26. One is the trigonometric value of...






27. A parallelogram with adjacent sides of unequal lengths






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






29. Kinetic energy (Ek)






30. 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






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






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






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






34. The act or process of measuring






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






36. Resistance to wear - abrasion and penetration






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






38. 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)






39. The classes of fastening devices are...






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






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






42. 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






43. Pythagoras' Theorem






44. Work per second






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






46. A quadrilateral with no parallel sides






47. Force - work done - power - mechanical efficiency






48. Obtuse angle






49. The force that is equal in magnitude but opposite in direction to the resultant force is called






50. Cosine rule