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. 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






2. As the cosine decreases - the...






3. A quadrilateral with two parallel sides






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






5. One is the trigonometric value of...






6. 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% -






7. Work per power stroke (J)






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






9. 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






10. PFDs






11. A quadrilateral with no parallel sides






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






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






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






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






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






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






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






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






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






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

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22. 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






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






24. The classes of fastening devices are...






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






26. P & IDs






27. Cosine rule






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






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






30. 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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31. Potential energy (Ep)






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






33. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...






34. 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.






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






36. Work per second






37. A displacement of 9 m north of point A - and another of 6 m west of point A can be added to give a resultant displacement from point A of...






38. Is the required to change a unit mass from a gas to liquid or liquid to a gas






39. Micro organisms promote corrosion...






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






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






42. A parallelogram with four equal sides






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






44. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor






45. Right angle






46. Safe working stress is determined by...






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






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






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






50. coefficient of expansion