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






2. 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






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






4. Orthographic projection means...






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






6. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...






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






8. 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






9. Safe working stress is determined by...






10. 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% -






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






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






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






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






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






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






17. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp






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






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






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

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21. Cosine rule






22. One is the trigonometric value of...






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






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






25. 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






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






28. coefficient of volumetric expansion

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






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






31. Work per second






32. Reflex angle






33. H2SO4 is the chemical formula for...






34. 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.






35. As the cosine decreases - the...






36. Protons have a mass number of...






37. A parallelogram with four equal sides






38. Acute angle






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






40. Compounds classified as salts may have the following characteristics






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






42. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation






43. 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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44. A quadrilateral with two parallel sides






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






46. Copper fails due to...






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






48. P & IDs






49. 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)






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