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. Any two angles whose sum is 90






2. PVn(super script n) = C






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






4. As the cosine decreases - the...






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






6. Orthographic projection means...






7. Malleable cast iron is produced by...






8. Sine Rule






9. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain


10. Factor of safety






11. Pythagoras' Theorem






12. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change






13. 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)






14. A pinch of salt is added to a glass of water. The result is...






15. PFDs






16. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will






17. Energy can be...






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






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






20. 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






21. Potential energy (Ep)






22. A triangle with two equal sides






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






24. 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






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






26. 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.






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






28. Straight angle






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






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






31. 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






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






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






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






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






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






37. Protons have a mass number of...






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






39. 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






40. Acute angle






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






42. Expansion of a gas is said to be adiabatic when expansion takes place at...






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






44. coefficient of volumetric expansion


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






46. A triangle with no two sides of equal length






47. A parallelogram with adjacent sides of unequal lengths






48. H2SO4 is the chemical formula for...






49. The classes of fastening devices are...






50. 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% -