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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 closed plane figure bounded by straight sides






2. Right angle






3. The ability to return to its original shape after an external force has been removed






4. 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






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






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






7. Pythagoras' Theorem






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






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






10. The act or process of measuring






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






12. A quadrilateral with no parallel sides






13. Velocity ratio is...






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






15. Compounds classified as salts may have the following characteristics






16. Obtuse angle






17. 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






18. Kinetic energy (Ek)






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






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






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






22. 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






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






24. One is the trigonometric value of...






25. Reflex angle






26. 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






27. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.






28. coefficient of superficial (area) expansion






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






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






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






32. Stainless fails due to...






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






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






35. Sine Rule






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






38. The factor of safety is always expressed...






39. Orthographic projection means...






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






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






42. Force - work done - power - mechanical efficiency






43. coefficient of volumetric expansion

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44. Straight angle






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






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






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






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






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






50. PFDs