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. A parallelogram with four equal sides






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






3. 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?






4. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke






5. PFDs






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






7. The classes of fastening devices are...






8. The law that states that for a fixed amount of gas at a constant pressure - the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases






9. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies






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






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






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






13. 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% -






14. 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






15. Copper fails due to...






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






17. 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






18. Kinetic energy (Ek)






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






20. Energy can be...






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






22. Force - work done - power - mechanical efficiency






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






24. coefficient of expansion






25. coefficient of volumetric expansion


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






27. A closed plane figure bounded by straight sides






28. Area of a segment






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






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






31. Mechanical efficiency






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






33. Cosine rule






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






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






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






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






38. Protons have a mass number of...






39. coefficient of superficial (area) expansion






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






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






42. Velocity ratio is...






43. Orthographic projection means...






44. Stainless fails due to...






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






46. 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






47. Change in tempereature where no heat in transferred - PV(supercript v) = C






48. A 1 N weight has a kinetic energy of 1 J when its speed is...






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






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