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. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%






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






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






4. Acute angle






5. PVn(super script n) = C






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






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






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






9. coefficient of expansion






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






11. Factor of safety






12. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp






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






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






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






16. Micro organisms promote corrosion...






17. 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?






18. 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






19. Force






20. A quadrilateral with two parallel sides






21. Pythagoras' Theorem






22. As the cosine decreases - the...






23. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only






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






25. Obtuse angle






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






27. The classes of fastening devices are...






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






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






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






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






32. One is the trigonometric value of...






33. A parallelogram with adjacent sides of unequal lengths






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






35. Work per second






36. Cosine rule






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






39. coefficient of volumetric expansion

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40. P & IDs






41. 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






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






43. Potential energy (Ep)






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






45. Resistance to wear - abrasion and penetration






46. 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






47. The force that is equal in magnitude but opposite in direction to the resultant force is called






48. Work per power stroke (J)






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






50. A triangle with two equal sides