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






2. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...






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






4. 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






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






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






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






8. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands






9. 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






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






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






12. Force - work done - power - mechanical efficiency






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






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






15. H2SO4 is the chemical formula for...






16. Velocity ratio is...






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






18. Micro organisms promote corrosion...






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






20. A displacement of 9 m north of point A - and another of 6 m west of point A can be added to give a resultant displacement from point A of...






21. Force






22. 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






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






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






25. Safe working stress is determined by...






26. As the cosine decreases - the...






27. coefficient of volumetric expansion


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






29. Cosine rule






30. Orthographic projection means...






31. A 6 m long cantilever beam carries a concentrated load of 45 kN at its free end. What is the shear force at the wall?






32. Work per power stroke (J)






33. Copper fails due to...






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






35. Compounds classified as salts may have the following characteristics






36. Energy can be...






37. Obtuse angle






38. Malleable cast iron is produced by...






39. Work per second






40. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...






41. Kinetic energy (Ek)






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 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






44. One is the trigonometric value of...






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






46. A parallelogram with adjacent sides of unequal lengths






47. Right angle






48. A closed plane figure bounded by straight sides






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


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