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






2. Protons have a mass number of...






3. 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.






4. The act or process of measuring






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






6. Stainless fails due to...






7. 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






8. Copper fails due to...






9. Potential energy (Ep)






10. Right angle






11. 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






12. 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






13. For making steal is done in a pear shaped vessel that refines molten iron from a blast furnace and scrap into steel






14. Area of a segment






15. Safe working stress is determined by...






16. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain


17. PFDs






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






19. Acute angle






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. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change






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






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






24. Work per power stroke (J)






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






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






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






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






29. Any two angles whose sum is 90






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






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






32. Pythagoras' Theorem






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






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






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






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






37. Factor of safety






38. Mechanical efficiency






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






40. A triangle with no two sides of equal length






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






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






43. Obtuse angle






44. 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






45. Orthographic projection means...






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






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






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






49. Straight angle






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