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. Copper fails due to...






2. Factor of safety






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






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






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






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






7. 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






8. Reflex angle






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






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






11. A parallelogram with adjacent sides of unequal lengths






12. The act or process of measuring






13. Obtuse angle






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






15. Protons have a mass number of...






16. A triangle with no two sides of equal length






17. 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






18. 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






19. 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






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






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






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






23. H2SO4 is the chemical formula for...






24. Mechanical efficiency






25. Right angle






26. 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% -






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






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






29. The classes of fastening devices are...






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






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






32. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.


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






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






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






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






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






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






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






40. Any two angles whose sum is 90






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






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






43. Cosine rule






44. Micro organisms promote corrosion...






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






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






47. 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.






48. 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...






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






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