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






2. u = initial velocity (m/s) - v = final velocity (m/s) - t = time (s) - s = distance (m) - a = acceleration (m/s/s) - g = acceleration due to gravity (m/s/s)






3. coefficient of expansion






4. 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






5. Pythagoras' Theorem






6. coefficient of volumetric expansion

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7. Compounds classified as salts may have the following characteristics






8. 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?






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






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






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






12. Obtuse angle






13. Potential energy (Ep)






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






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






16. Copper fails due to...






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






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






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






20. Negative terminal of the rectifier must always be connected to the structure that is being protected






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






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






23. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke






24. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%






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






26. 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






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






28. Protons have a mass number of...






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






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






31. The most common thread used in North America on fasteners such as bolts - is the...






32. A parallelogram with four equal sides






33. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second






34. When classifying beams - the term simple beam refers to a beam






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






36. Straight angle






37. Orthographic projection means...






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






39. Energy can be...






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






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






42. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second






43. Kinetic energy (Ek)






44. 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% -






45. Cosine rule






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






47. A triangle with no two sides of equal length






48. 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






49. Sine Rule






50. 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