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. One is the trigonometric value of...






2. Copper fails due to...






3. Straight angle






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






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






6. Force - work done - power - mechanical efficiency






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






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






9. A quadrilateral with two parallel sides






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






11. Acute angle






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






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






14. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...






15. Velocity ratio is...






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






17. 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...






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






19. 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?






20. Whether a material will break under sudden impact or hard blow






21. Orthographic projection means...






22. The ratio of the density of a substance to the density of a standard substance at the same temperature and pressure - the ratio of the density of the substance to the density of the substance to the density of water






23. Protons have a mass number of...






24. A closed plane figure bounded by straight sides






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






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






27. H2SO4 is the chemical formula for...






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






29. Mechanical efficiency






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






31. 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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32. Obtuse angle






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






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






35. As the cosine decreases - the...






36. Safe working stress is determined by...






37. A quadrilateral with no parallel sides






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






39. P & IDs






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






41. Kinetic energy (Ek)






42. Change in tempereature where no heat in transferred - PV(supercript v) = C






43. 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






44. A parallelogram with adjacent sides of unequal lengths






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






46. A triangle with two equal sides






47. Four pieces of iron are heated in a furnace to high temperatures. The one at the highest temperature would appear






48. 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






49. Force






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