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 quadrilateral with two parallel sides






2. coefficient of expansion






3. Work per second






4. 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






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






6. Cosine rule






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






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






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






11. Copper fails due to...






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






13. 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?






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






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






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






17. Velocity ratio is...






18. Reflex angle






19. A closed plane figure bounded by straight sides






20. Refers to change in the position of the body - relative to some reference point - not concerned with actual distance traveled - a vector quantity with magnitude and direction






21. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation






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






23. 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






24. The moment of a force about a point is...






25. The rate at which heat flow through a slab of a material does not depend on...






26. 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)






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






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






29. As the cosine decreases - the...






30. Force - work done - power - mechanical efficiency






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






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






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






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






35. Any two angles whose sum is 90






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






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






38. Compounds classified as salts may have the following characteristics






39. A parallelogram with adjacent sides of unequal lengths






40. 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






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






42. 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






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






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






45. Protons have a mass number of...






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






47. Stainless fails due to...






48. 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






49. The most common material used in making large industrial diesel engine pistons is...






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