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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. Acute angle






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






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






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






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






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

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






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






10. The act or process of measuring






11. Resistance to wear - abrasion and penetration






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






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






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






15. Sine Rule






16. Reflex angle






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






18. Factor of safety






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






20. Cosine rule






21. Obtuse angle






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. A straight line that joins 2 points or circumference






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






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






26. Force






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






28. P & IDs






29. A triangle with two equal sides






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






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






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






33. Orthographic projection means...






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






35. Protons have a mass number of...






36. coefficient of superficial (area) expansion






37. Mechanical efficiency






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






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






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






41. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal






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






43. A 10 m long steel pipe when heated to increase its temperature by 85






44. In a pipe if no fluid is added or removed - flow must remain constant - due to the product of area and velocity being constant - flow must be the same going in as coming out of pipe






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






47. Ability to withstand deformation above elastic limit under compression without failure






48. One is the trigonometric value of...






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






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






Can you answer 50 questions in 15 minutes?



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