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






2. P & IDs






3. PVn(super script n) = C






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






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






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






7. A triangle with two equal sides






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






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






10. Force






11. Area of a segment






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

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13. A straight line that joins 2 points or circumference






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






15. A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it A = piab or A = pi(1/2D)(1/2d) - same as = (pi/4)D/d






16. A closed plane figure bounded by straight sides






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






18. Velocity ratio is...






19. Micro organisms promote corrosion...






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






21. 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






22. A parallelogram with adjacent sides of unequal lengths






23. 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






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






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. Resists oxidation - high strength at high temperatures - increases hardness and abrasion resistance without increasing brittleness - increases response to heat treatment - increases depth of hardness penetration - at 12% chromium steel with not tarni






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






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






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






30. Force - work done - power - mechanical efficiency






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






32. Reflex angle






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






34. One is the trigonometric value of...






35. A gas occupies 8.62 m3 at 1800 kPa and 26






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






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






38. A parallelogram with four equal sides






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






40. Copper fails due to...






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






42. The most common scale in use is the...






43. Moist hydrogen sulphide environment - hydrogen sulphide must be present - water - even trace amount - high strength steel - steel must be under tensile stress - either applied or residual






44. 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






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






46. Pythagoras' Theorem






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






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






49. H2SO4 is the chemical formula for...






50. 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