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. Needs to a high vacuum present in system before charging






2. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)






3. 1. increases net power 2. clean working fluid 3. cheap fuel can be used






4. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet






5. Counter act force and load on thrust bearings






6. The utilization of one form of input energy to generate two or more forms of output energy






7. 1. high power to weight ration 2. use of different liquids and gaseous fuels 3. start rapidly 4. simple and compact design 5. reliable 6. remote operation






8. Reduction of NOx through ammonia injection priot to catalyst - lowering NOx to 10ppm






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






10. Velocity increases as passes through nozzles






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






12. 'booster' compressor






13. Increase pressure affecting performance of condenser but do not incresase temperature






14. Control a steady backpressure - sensing element in exhuast line






15. Refers to the production of power during overload demands






16. 1. control range of 0 to 100% load 2. energy efficient






17. 1. verticle cyclinder 2. cabin heater 3. central tube wall






18. 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






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






20. zeolite molecular sieve desiccant






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






22. 1. Split 2. double






23. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices






24. 1. high manufacturing costs 2. slow speed changes 3. low efficiencies at low throttle






25. Type of hydrometer indicating % of salt in solution






26. 1. written 2. spoken 3. visual






27. 1. walnuts 2. rice 3. carbo- blase 4. offline water wash - best method






28. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)






29. 1. Condensing 2. non - condensing (backpressure)






30. 1. evaporator coil






31. Working fluid is compress then preheated in regenerator






32. Direct contact type - uses converging nozzles and in moderate vacuum






33. Polymers (polyelectrolytes)






34. Wrist pins that connect pistons to rod - retained bu circlips






35. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily






36. As prime movers in pulp and paper industry






37. 1. contact - 'jet' 2. surface






38. No dissolved oxygen but does contain nitrates






39. Help maintain definite thrust toward exhaust






40. Chrome- iron alloy






41. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled






42. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter






43. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles






44. Servomotors






45. 1. large volumes of air 2. simple and rugged 3. low maintenance






46. 1. electricial purity 2. silver nitrate - milky white






47. 1. lubricate sliding surfaces 2. cool bearings






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






49. 1. activated sludge and primary sludge combined 2. heated to 37C 3. sits for 25 days 4. anaerobic bacteria breaks down organic contents 5. produces useable gases for waste heat






50. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure