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






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






3. A closed plane figure bounded by straight sides






4. 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






5. coefficient of superficial (area) expansion






6. Work per power stroke (J)






7. The classes of fastening devices are...






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

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9. 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)






10. Energy can be...






11. As the cosine decreases - the...






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






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






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






15. 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.






16. 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






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






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






19. 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






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






21. A 1 N weight has a kinetic energy of 1 J when its speed is...






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






23. One is the trigonometric value of...






24. 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






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






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






27. Area of a segment






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






29. Safe working stress is determined by...






30. Factor of safety






31. A triangle with no two sides of equal length






32. coefficient of expansion






33. A parallelogram with four equal sides






34. The amount of heat required to completely melt 25 kg of ice from a temperature of -10






35. A quadrilateral with two parallel sides






36. 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?






37. Any two angles whose sum is 90






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






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






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






41. Copper fails due to...






42. Orthographic projection means...






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






44. 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






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






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






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






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






50. A straight line that joins 2 points or circumference