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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. Equal and opposite reation
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2. 1. CCME 2. CEQG 3. CWQG 4. US EPA
diesel engines aka
shaft seals
government regualtions for waste water
sprial valve
3. DLN - reduce NOx down to 9ppm but have an increased combustion area
'turbine'
dummy pistons
dynamic compressor control
dry low NOx combustion systems
4. Simple generator - light - no battery - hotter spark at higher speeds
reaction turbines use ____ bearings
non - condensables
magneto ignition
rotary compressor types
5. Radiator type
air leaks in condensers
fluid/air cooler
ammonia compression cycle low side
non - condensing turbines used
6. Pressure drops across the moving blades
distinguishing reaction turbine
2 major factos affecting gas turbine efficiency and power
selective catalytic reduction (SCR)
mechanical overspeed trip
7. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy
First stage of gas turbine nozzles made of...
disc rotors
cogeneration
newton's 2nd law
8. Air flow is horizontal
salometer
purpose of compressor lubrication
crossflow
regulation compressor systems
9. Made of cast iron and support by stay bolts to protect against a vacuum
convergent- divergent
water boxes
pressure- velocity compounding
impulse buckets
10. 1. Responsive to speed changes 2. responsive to pressurre changes
govrenors classes
distinguishing reaction turbine
3 types of communication
compression ratio
11. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles
dynamic compressor control
air ejectors
automatic extraction
air leaks in condensers
12. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled
sprial valve
condenser tube attachment methods
types of reboilers
compression ratio
13. Driving rotating equipment
open cycle
servo motor
velocity compounding
primary cogeneration output
14. Too small to settle out - add floc
Axial thrust
compressor valve types
higher compression ratios needed at...
angstrom particles
15. Polymers (polyelectrolytes)
servo motor
coagulant aids
double- flow in reaction turbines
purpose of dry receiver
16. Chrome- iron alloy
sealing strips made of...
distinguishing reaction turbine
turbocharge
centrifugal air compressors advantages
17. Needs to a high vacuum present in system before charging
gas turbine efficiencies based on...
regulation compressor systems
refrigerant evaporator
refrigeration system charging
18. Admirally brass or Munte metal - 25-40mm thick
gantt chart
types of refrigerant evaporators
condenser tube sheets made of...
'topping cycle'
19. Most widely used - least amount of steam
single flow turbines
types of reciprocation compressors
Axial thrust
aerial coolers
20. Countries with small grids or specail grid requirements - has a high efficiency at base loads
dummy pistons
pressure- velocity compounding
marco cogeneration advantages
dual shaft combined cycle cogeneration
21. Grit chambers and screens for waster water system
headworks
water boxes
eutectic solution
axial compressors
22. Use of a rotary lobe air blower
condenser safety devices
non - condensables
coalescing filters
supercharge
23. 1. intake 2. compression 3. power 4. exhaust
anoxic
starters transmit power to front end of gas turbnine by...
4 stroke internal combustion
compressor displacement
24. Removal of exhaust gases by blow air through
feature of impulse turbine
fluid/air cooler
adv of impulse turbine
scavenging
25. Small clearances between discs on shaft to...
single shaft combine cycle cogeneration
Prevent thermal stresses
tandem compound turbines
types of reboilers
26. 1. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing
gas turbine disadvantages
turbocharge
steam expanding through stationary nozzles
purpose of compressor lubrication
27. Up to 60-90%
sprial valve
cogeneration reduces energy costs by...
closed cycle advantages
pressure sensitve governors
28. 1. simple design 2. less piping 3. no freezing hazard
shaft seals
solid injection designs
refrigeration system charging
air cooling advantages over water cooling
29. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
jet condensers
'bottoming cycle'
types of reciprocation compressors
bay
30. Used on large turbines to supply lower part of the bearing with oil to prevent metal to metal contact
salometer
jacking oil system
air cooling advantages over water cooling
3 types of communication
31. 1. lubricate sliding surfaces 2. cool bearings
extraction pumps usually are _____ type
mechanical governors
hairpin hx
lube oil system basic functions
32. 1. activated sludge 2. rotating biological contactors 3. trickling filters
moisture separator
cogeneration reduces energy costs by...
biological removal of solids
sentinel vales
33. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer
purpose of dry receiver
convergent nozzles
communication structure
Piezometer wells
34. 5mm in diameter
inlet air unloader advantages
gudgeon pins
coagulant aids
air leak tolerated in condenser up to...
35. 1. air compressed to 1100-3000kPa 2. combustion at 2000C 3. mixed with air - cooled to 918C on exit 4. combustor gases go to turbine 5. gases from turbine leave at atmospheric pressure and 500-640C
unfired
gas turbine operating principles
oil system components
'topping cycle'
36. Higher power and speeds
hunting
hairpin hx
double flow turbines
jet condensers
37. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting
a tandem turbine coupled by flexible couplings
environmental management program
non - condensing turbines used
bakpressure turbines
38. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost
counterflow
single shaft combine cycle cogeneration
gas turbine efficiencies based on...
unfired
39. Very high speed with extremely high centrigufal force and high frictional losses
R-22
impulse turbine disadvantage
cogeneration reduces energy costs by...
pressure- velocity compounding
40. 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
double flow turbines
close cycle
crossflow
41. Use teflon or carbon to lubricate system
base load
saturated air
inlet cooling methods - evaporative
oil free compressors
42. One or more tube bundles - in one or more bays for an individual service or process
unit
dummy pistons
double flow turbines
types of turbines
43. Results in a gain in velocity - the moving blades change direction producing force
pressure drop across first row of reation turbine
single point fuel injection
saturated air
waste water treatment plant components
44. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing
Piezometer wells
brine
sprial valve
reaction turbines use ____ bearings
45. Center- to- center distance between baffles
capacity
thermal load control
baffle pitch
anoxic
46. 1. contact - 'jet' 2. surface
nozzels made of...
condenser types
communication structure
mechanical drive turbine
47. A concentrated solution at its critical point
eutectic solution
thrust adjsusting gear
close cycle disadvantages
3 speed sensitive governors
48. The difference between the no- load and full- load speed - expressed as a %
lube oil system basic functions
starters transmit power to front end of gas turbnine by...
trunk type piston
droop
49. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
speed droop
Axial thrust
velocity compounding
crossflow
50. 1. Carbon ring 2. labyrinth seal 3. water seal
single point fuel injection
shaft seals
Ammonia R-717
purpose of a wet receiver
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