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






2. Energy can be...






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






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






5. A displacement of 9 m north of point A - and another of 6 m west of point A can be added to give a resultant displacement from point A of...






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






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






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






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






11. 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






12. Malleable cast iron is produced by...






13. Straight angle






14. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)






15. Kinetic energy (Ek)






16. 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






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






18. Work per power stroke (J)






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






20. As the cosine decreases - the...






21. A parallelogram with adjacent sides of unequal lengths






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






23. A parallelogram with four equal sides






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






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






26. Micro organisms promote corrosion...






27. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.






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






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






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






31. 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






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






33. All sides equal - all angles are equal and opposite sides parallel - divided into 6 ISOSCELES triangles - each angle in an octagon is 135 - A = 4.83s2






34. A closed plane figure bounded by straight sides






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






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






37. Any two angles whose sum is 90






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






39. Stainless fails due to...






40. 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)






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






42. 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






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






44. Pythagoras' Theorem






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






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






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






48. PVn(super script n) = C






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






50. Cosine rule