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






2. The classes of fastening devices are...






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






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






5. In the equation 0.004 + D = 0.0042 - the value of D is...






6. Work per power stroke (J)






7. PVn(super script n) = C






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






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






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






11. 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...






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






13. 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






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






15. Expansion of a gas is said to be adiabatic when expansion takes place at...






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






17. Cosine rule






18. Area of a segment






19. 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.






20. A closed plane figure bounded by straight sides






21. 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?






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






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






24. Resistance to wear - abrasion and penetration






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






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






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






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






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






30. Malleable cast iron is produced by...






31. Any two angles whose sum is 90






32. A quadrilateral with two parallel sides






33. Kinetic energy (Ek)






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






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






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






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






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






39. Protons have a mass number of...






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






41. One is the trigonometric value of...






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






43. 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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44. The moment of a force about a point is...






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






46. Acute angle






47. coefficient of superficial (area) expansion






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






49. Work per second






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