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 straight line that joins 2 points or circumference






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






3. 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.






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






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






7. H2SO4 is the chemical formula for...






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






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






10. coefficient of expansion






11. Stainless fails due to...






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






13. One is the trigonometric value of...






14. Any two angles whose sum is 90






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






16. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known






17. Kinetic energy (Ek)






18. 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






19. As the cosine decreases - the...






20. 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?






21. PVn(super script n) = C






22. The classes of fastening devices are...






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






24. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...






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






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






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






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






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






30. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...






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






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






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






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






35. Orthographic projection means...






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






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






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






39. Pythagoras' Theorem






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






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






42. Work per power stroke (J)






43. 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






44. A closed plane figure bounded by straight sides






45. Right angle






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






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






48. Malleable cast iron is produced by...






49. Obtuse angle






50. 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