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. When classifying beams - the term simple beam refers to a beam






2. Safe working stress is determined by...






3. Kinetic energy (Ek)






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






5. 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)






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






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






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






9. H2SO4 is the chemical formula for...






10. Reflex angle






11. Pythagoras' Theorem






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






13. Cosine rule






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






15. 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






16. Protons have a mass number of...






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






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






19. A parallelogram with adjacent sides of unequal lengths






20. The classes of fastening devices are...






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






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






24. Potential energy (Ep)






25. Work per power stroke (J)






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

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27. 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






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






29. Copper fails due to...






30. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2






31. coefficient of superficial (area) expansion






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






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






34. Compounds classified as salts may have the following characteristics






35. 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...






36. Resistance to wear - abrasion and penetration






37. A triangle with two equal sides






38. A straight line that joins 2 points or circumference






39. P & IDs






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






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






42. 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






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






44. Malleable cast iron is produced by...






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






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






47. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second






48. coefficient of volumetric expansion

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






50. 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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