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Test your basic knowledge |
Power Engineering 2
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Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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. Throttle body
two stage refrigeration system
types of refrigerant evaporators
single point fuel injection
primary cogeneration output
2. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases
communication structure
air leaks in condensers
convergent- divergent
aftercoolers
3. A1 - A2 - A3 - B1 - B2 and B3 A = toxicity not identified under 400ppm B = toxicity identified under 400ppm 1 = not flammable 2 = low flammable limit 3 = highly flammable
refrigerant groups
purpose of compressor lubrication
droop
inlet cooling methods - evaporative
4. 1. evaporator coil
aero- derivative turbines
purpose of dry receiver
ammonia compression cycle low side
impulse force
5. 1. verticle cyclinder 2. cabin heater 3. central tube wall
turbocharge
types of fired heaters
peak power
feature of impulse turbine
6. As prime movers in pulp and paper industry
impulse force
types of turbines
non - condensing turbines used
dynamic compressor control
7. Steam expands and pressure drops as it passes through moving blades - unbalance pressure
automatic extraction
two stage refrigeration system
reaction turbine
air cooling advantages over water cooling
8. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
components of PM program
Above or at atmospheric pressure
cogeneration application areas
higher compression ratios needed at...
9. A verticle well is used to increase the NPSH - gives better performance and less cavitation
oil system components
reduce cavitation in extraction pumps
clean turbine blading with
aero- derivative turbines
10. Servomotors
water/oil separator
power oil
servo motor
barring gears prevent
11. Equal and opposite reation
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12. Wrist pins that connect pistons to rod - retained bu circlips
impulse turbine disadvantage
water/oil separator
inlet cooling methods - evaporative
gudgeon pins
13. At high temperatures a material stretches
creep
reaction turbine
difference between diesel and gas engines
types of refrigerant evaporators
14. Velocity increases as passes through nozzles
critical pressure
when impulse turbine pressure drops
3 speed sensitive governors
compressor displacement
15. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
types of turbines
bank
pressure drop across first row of reation turbine
types of refrigerant evaporators
16. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet
disc rotors
water boxes
mechanical overspeed trip
thermocouple locations in fired heaters
17. Primary fuel produces high thermal energy for processes - the waste heat is used to produce electrical energy
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18. Results in a gain in velocity - the moving blades change direction producing force
Piezometer wells
pressure drop across first row of reation turbine
disc rotors
mirco cogeneration advantages
19. 5mm in diameter
counterflow
magneto ignition
turbine casings
air leak tolerated in condenser up to...
20. DLN - reduce NOx down to 9ppm but have an increased combustion area
'turbine'
Axial thrust
dry low NOx combustion systems
government regualtions for waste water
21. A concentrated solution at its critical point
cogeneration
anaerobic digesters
brine
eutectic solution
22. 1. control range of 0 to 100% load 2. energy efficient
camshaft is the link between
inlet modulating valve advantages
refrigeration system charging
reaction blading
23. '3 ports' 1. intake and exhaust 2. compression and ignititon
air dryers
waste water treatment plant components
staging
2 stroke internal combustion
24. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters
Above or at atmospheric pressure
centrifugal air compressor disadvantages
mechanical drive turbine
Prevent thermal stresses
25. 1. to increase steam production 2. control superheater temperatures 3. meet process demands
lube oil system basic functions
3 speed sensitive governors
duct burners in HRSG
aftercoolers
26. Entire collection of all component
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27. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting
Above or at atmospheric pressure
feature of impulse turbine
environmental management program
thrust adjsusting gear
28. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity
gas turbine disadvantages
air take 'pulse cleaing systems'
purpose of a wet receiver
secondary cogeneration output
29. Is the ratio of the discharge pressure to the intake pressure absolute
compression ratio
dummy pistons
types of turbines
brine
30. Made of cast iron and support by stay bolts to protect against a vacuum
water boxes
Prevent thermal stresses
pressure sensitve governors
power oil
31. Fuel supplied firstg produces electrcial power with thermal energy as a by- product
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32. 1. simple design 2. less piping 3. no freezing hazard
BOD (biological oxygen demand)
automatic extraction
turbine casings
air cooling advantages over water cooling
33. 1. Flyweights 2. coutner spring 3. function based on centrifugal force
sprial valve
mechanical governors
nozzels made of...
axial air compressors
34. Center- to- center distance between baffles
legal requirements of record keeping
'topping cycle'
baffle pitch
compressor displacement
35. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers
difference between diesel and gas engines
Axial thrust
centrifugal air compressors advantages
jet condensers
36. drum rotors on reaction turbines eliminates...
inlet modulating valve advantages
air ejectors
Axial thrust
tandem compound turbines
37. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic
oil free compressors
ammonia compression cycle low side
marco cogeneration advantages
Ammonia R-717
38. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration
refrigerant groups
liquid line aka
air dryer types
project management
39. Air flow is horizontal
crossflow
shaft seals
centrifugal air compressor disadvantages
waste water treatment purpose
40. The difference between the no- load and full- load speed - expressed as a %
expansion valve
newton's 2nd law
shaft seals
droop
41. 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
unit
refrigerant evaporator
anaerobic digesters
marco cogeneration advantages
42. Too small to settle out - add floc
impulse turbine disadvantage
angstrom particles
communication structure
disc rotors
43. Cannot go below -18
sodium chloride
bank
bay
Axial thrust
44. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
jet condensers
purpose of dry receiver
ISO 9000 certified
reaction turbine components
45. Most widely used - least amount of steam
single flow turbines
'topping cycle'
air dryers
extraction governor
46. Working fluid is compress then preheated in regenerator
methods to detect cooling water leaks
newton's 2nd law
supercharge
close cycle
47. Countries with small grids or specail grid requirements - has a high efficiency at base loads
dual shaft combined cycle cogeneration
R-22
selective catalytic reduction (SCR)
Piezometer wells
48. 1. increases net power 2. clean working fluid 3. cheap fuel can be used
dry low NOx combustion systems
closed cycle advantages
intercoolers
types of turbines
49. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy
Above or at atmospheric pressure
First stage of gas turbine nozzles made of...
dynamic compressor control
bakpressure turbines
50. Discharge steam when excessive backpressure exists
feature of impulse turbine
liquid line aka
base load
sentinel vales
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