Test your basic knowledge |

Power Engineering 2

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. Is the ratio of the discharge pressure to the intake pressure absolute






2. Each shaft needs a thrust bearing






3. Means to come together and form one mass - removes oil and water from air






4. Monel metal - high tensile strength - nickel copper alloy






5. Seperately forged discs or wheels and shrunk onto shaft






6. Sagging and hogging - 20-40rpm






7. Forced or induced draft






8. 1. better than gantt chart 2. establishes feasible sequence 3. timetable 4. spare time plotted 5. critical activities 6. use of arrow diagrams 7. event (aka nodes) - a situation that occurs after a completed activity 8. schedule manpower efficiently






9. 1. compressor discharge 2. condenser 3. liquid receiver






10. Help maintain definite thrust toward exhaust






11. 1. collection system 2. seperation pond 3. flare pit 4. stabilization lagoon 5. wastewater heater 6. 1st stage aeration tank - activated sludge 7. 2nd stage aeration tank 8. clarifiers 9. polishing pond






12. King valve






13. Driving rotating equipment






14. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers






15. Used on large turbines to supply lower part of the bearing with oil to prevent metal to metal contact






16. Results in a gain in velocity - the moving blades change direction producing force






17. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing






18. Used for single acting compressors






19. Countries with small grids or specail grid requirements - has a high efficiency at base loads






20. Contains dissolved oxygen






21. Straight condensing






22. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs






23. 1. Pressure compounding 2. velocity compounding 3. pressure- velocity compounding






24. 1. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing






25. '3 ports' 1. intake and exhaust 2. compression and ignititon






26. Results in pressure drop and increased velocity






27. Polymers (polyelectrolytes)






28. Reduces steam pressure and velocity in two or more steps






29. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity






30. 1. use clean burning fuels 2. less fuel being used - saving energy reserves 3. electrical production onsite lowers construction demands for new sites and reduces transmission line power losses






31. 1. evaporator coil






32. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work






33. Made of polyethylene - skimming from the surface






34. HFC group - zero ozone depletion - nonflammable and nonexplosive - boiling point of -26.2 - miscibility problem with minerial oil - use sythetics ester based






35. 'huff and puff' methods

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


36. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function






37. Contains 0.5kg of moisture for every 28 cubic meter of air






38. The difference between the no- load and full- load speed - expressed as a %






39. Requires annual review of SOPs






40. Change in direction causing a turbine to move






41. Use teflon or carbon to lubricate system






42. On the exhaust side - drives the blower - being connected to the same shaft - increases power by 50-70% as more air is forced into the engine






43. 1. Responsive to speed changes 2. responsive to pressurre changes






44. 1. inlet vane 2. electro- pneumatic control 3. microprocessor based control






45. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)






46. Controlled pressure from intermediate stages of turbine






47. 1. to increase steam production 2. control superheater temperatures 3. meet process demands






48. Type of hydrometer indicating % of salt in solution






49. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost






50. 5mm in diameter