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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. Increased efficiency due to decreased frictional losses
adv of impulse turbine
ammonia compression cycle low side
cross compound turbine
legal requirements of record keeping
2. 'booster' compressor
rotary compressor types
inlet air unloader advantages
pressure drop across first row of reation turbine
two stage refrigeration system
3. Type of hydrometer indicating % of salt in solution
a tandem turbine coupled by flexible couplings
convergent nozzles
reaction blading
salometer
4. Used to open and close the by- pass port in a stator - varies the volum compressed air being produced
plant thermal effificienies
axial air compressors
'topping cycle'
sprial valve
5. 1. widely used 2. single stage 3. impulse turbine
'gas turbine'
types of refrigerant evaporators
mechanical drive turbine
coalescing filters
6. Independant of the governor - inductive sensor (magnetic speed pickups)
clean turbine blading with
cogeneration
electronic overspeed trip
dynamic compressor control
7. Large turbines with a generator on each shaft
gas turbine efficiencies based on...
cross compound turbine
3 speed sensitive governors
velocity compounding
8. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring
expansion valve
open cycle
a tandem turbine coupled by flexible couplings
air ejectors
9. Quantity ofr compressed air and delivered air by the compressor
staging
capacity
heat exchanger materials
open cycle
10. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function
intercoolers
unfired
compressor displacement
thermocouple locations in fired heaters
11. Removal of exhaust gases by blow air through
scavenging
R-134a
condenser tube attachment methods
suction line unloading valve advantages
12. 1. compression ration across compressor 2. turbine inlet temperature
counterflow
2 major factos affecting gas turbine efficiency and power
'topping cycle'
adv of impulse turbine
13. To remove and properly dispose of pollutants
cogeneration
velocity compounding
waste water treatment purpose
scavenging
14. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices
oil system components
types of reciprocation compressors
thermal load control
isochronous governing
15. Moving blades on a rotor
impulse buckets
anaerobic
tangs
R-22
16. At high temperatures a material stretches
creep
nozzels made of...
close cycle disadvantages
condenser types
17. Steam expands and pressure drops as it passes through moving blades - unbalance pressure
R-22
refrigerant evaporator
reaction turbine
oil system components
18. Nickel steel - strong fully balanced rotor - expensive
turbocharge
nozzels made of...
what large rotors are made of
methods to detect cooling water leaks
19. Rows of stationart baldes with alternating rows of moving blades
gas turbine advantages
anaerobic digesters
disc rotors
reaction turbine components
20. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
capacity
bank
types of refrigerant evaporators
pressure- velocity compounding
21. Eliminates thrust - steam admitted midway along casing
mirco cogeneration advantages
refrigerant evaporator
double- flow in reaction turbines
Piezometer wells
22. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%
plant thermal effificienies
gas turbine components
pressure sensitve governors
air cooling advantages over water cooling
23. Polymers (polyelectrolytes)
coagulant aids
ejector condenser
hx principles
2 stroke internal combustion
24. Does not contain dissolved oxygen
sealing strips made of...
sprial valve
isochronous governing
anaerobic
25. Pressure does not drop across the moving blades
surface condenser
feature of impulse turbine
types of fired heaters
tandem compound turbines
26. Pressure drops across the moving blades
inlet air unloader advantages
gas turbine efficiencies based on...
avoid surging
distinguishing reaction turbine
27. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface
hairpin hx
convergent nozzles
hx principles
purpose of dry receiver
28. Ground water monitoring device
reaction turbines use ____ bearings
when impulse turbine pressure drops
Piezometer wells
disc rotors
29. Straight condensing
when impulse turbine pressure drops
automatic extraction
ejector condenser
gas turbine advantages
30. Change in direction causing a turbine to move
impulse force
reduce cavitation in extraction pumps
refrigerant groups
Axial thrust
31. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases
air dryer types
convergent- divergent
downflow condenser
Piezometer wells
32. 1. compressor section 2. combustor 3. turbine section
gas turbine components
cogeneration
3 types of communication
refrigerant evaporator
33. Center- to- center distance between baffles
purpose of dry receiver
baffle pitch
supercharge
scavenging
34. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
R-22
sodium chloride
refrigerant groups
velocity compounding
35. Recuperative category - high pressure
double pipe hx
impulse force
reaction turbine
critical path method (CPM)
36. Entire collection of all component
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37. Is the ratio of the discharge pressure to the intake pressure absolute
aerial coolers
capacity
gas turbine blades should be replaced every
compression ratio
38. Refers to the production of power during overload demands
govrenors classes
'topping cycle'
peak power
gas turbine operating principles
39. Countries with small grids or specail grid requirements - has a high efficiency at base loads
anaerobic digesters
dual shaft combined cycle cogeneration
reaction blading
R-12
40. Air flow is upward
counterflow
'turbine'
ammonia compression cycle low side
liquid line aka
41. Counter act force and load on thrust bearings
dummy pistons
droop
diesel engines aka
cross compound turbine
42. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles
air ejectors
refrigeration system charging
difference between diesel and gas engines
refrigerant groups
43. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers
anoxic
difference between diesel and gas engines
cogeneration
refrigerant evaporator
44. 5mm in diameter
base load
types of reciprocation compressors
water/oil separator
air leak tolerated in condenser up to...
45. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads
crosshead
isochronous governing
aero- derivative turbines
staging
46. 1. intake 2. compression 3. power 4. exhaust
reduce cavitation in extraction pumps
4 stroke internal combustion
aerial coolers
secondary cogeneration output
47. A thrust block that enables the axial position of the rotor to be controlled
government regualtions for waste water
thrust adjsusting gear
higher compression ratios needed at...
communication structure
48. Centrifugal pumps
reaction turbines use ____ bearings
centrifugal air compressor disadvantages
distinguishing reaction turbine
extraction pumps usually are _____ type
49. 1. operates on a temperature difference between substances 2. warm to cold only 3. rate of transfer depends on temperature difference
single flow turbines
crosshead
automatic extraction
hx principles
50. No dissolved oxygen but does contain nitrates
types of refrigerant evaporators
anoxic
environmental management program
2 major factos affecting gas turbine efficiency and power
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