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. Any two angles whose sum is 90






2. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands






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






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






5. 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% -






6. 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






7. A quadrilateral with two parallel sides






8. 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






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






10. Area of a segment






11. 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)






12. H2SO4 is the chemical formula for...






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






14. Resists oxidation - high strength at high temperatures - increases hardness and abrasion resistance without increasing brittleness - increases response to heat treatment - increases depth of hardness penetration - at 12% chromium steel with not tarni






15. Sine Rule






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






17. Force






18. The act or process of measuring






19. Micro organisms promote corrosion...






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






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






22. A parallelogram with four equal sides






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






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






25. Cosine rule






26. Work per second






27. 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






28. P & IDs






29. Reflex angle






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






31. As the cosine decreases - the...






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






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






34. Pre- construction - shows graphically the mechanical design engineer's work - during construction - proper location - reference to all equipment - after construction - training reference anddetails of process - utility and electrical systems






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






36. Energy can be...






37. A closed plane figure bounded by straight sides






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






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






40. Protons have a mass number of...






41. A scalar quantity is one which has only magnitude and can be fully described by...






42. PVn(super script n) = C






43. Orthographic projection means...






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






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






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






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






48. Obtuse angle






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






50. Dangerous because a crack starts slowly and propagate slowly - exceed breaking strength and the metal fails suddenly - stress must be tensile can be produced by an external load or residual stress - condensed moisture and change in temperature