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






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






3. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree






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






5. Resistance to corrosion - improved properties at high and low temperatures - lowers coefficient of expansion






6. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain


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






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






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






10. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change






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






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






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






14. 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.






15. Resistance to wear - abrasion and penetration






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






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






18. Of a process or change taking place at constant temperature - PV = C






19. Cosine rule






20. H2SO4 is the chemical formula for...






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






22. A triangle with no two sides of equal length






23. Protons have a mass number of...






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






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






26. Kinetic energy (Ek)






27. A triangle with two equal sides






28. 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






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






30. PVn(super script n) = C






31. A parallelogram with adjacent sides of unequal lengths






32. 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






33. Reflex angle






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






35. Straight angle






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






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






38. A quadrilateral with two parallel sides






39. 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






40. A straight line that joins 2 points or circumference






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






42. Force






43. One is the trigonometric value of...






44. Compounds classified as salts may have the following characteristics






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






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






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






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






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






50. Energy can be...






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