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Test your basic knowledge |
Power Engineering 2
Start Test
Study First
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. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs
close cycle disadvantages
unfired
newton's 3rd law of motion
single flow turbines
2. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature
sentinel vales
shaft seals
inlet air unloader advantages
staging
3. 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
air dryers
critical path method (CPM)
base load
duct burners in HRSG
4. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)
unit
Prevent thermal stresses
regulation compressor systems
Above or at atmospheric pressure
5. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost
condenser types
droop
air take 'pulse cleaing systems'
single shaft combine cycle cogeneration
6. Have advantage of high efficiencies - 10% greater than centrifugal compressors
anoxic
inlet modulating valve advantages
closed cycle advantages
axial air compressors
7. 1. lowers power consumption 2. load changes frequently 3. pilot valve controls loading - adjustable
tangs
inlet air unloader advantages
closed cycle advantages
centrifugal air compressors advantages
8. Does not contain dissolved oxygen
3 types of gas turbine combustors
anaerobic
close cycle disadvantages
communication structure
9. 1. contact - 'jet' 2. surface
adv of impulse turbine
aftercoolers
servo motor
condenser types
10. Quantity ofr compressed air and delivered air by the compressor
lube oil system basic functions
duct burners in HRSG
capacity
newton's 2nd law
11. 1. walnuts 2. rice 3. carbo- blase 4. offline water wash - best method
clean turbine blading with
axial air compressors
mirco cogeneration advantages
droop
12. Rows of stationart baldes with alternating rows of moving blades
bakpressure turbines
axial compressors
reaction turbine components
combined cycle cogeneration
13. Entire collection of all component
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14. DLN - reduce NOx down to 9ppm but have an increased combustion area
dry low NOx combustion systems
two stage refrigeration system
extraction governor
jacking oil system
15. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily
isochronous governing
shaft seals
3 types of gas turbine combustors
suction line unloading valve advantages
16. 1. compressor discharge 2. condenser 3. liquid receiver
mechanical overspeed trip
ammonia compression cycle high side components
air leaks in condensers
starters transmit power to front end of gas turbnine by...
17. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)
base load
trunk type piston
extraction governor
condenser safety devices
18. 1. kettle 2. thermosyphon horizontal 3. thermosyphon vertical
First stage of gas turbine nozzles made of...
types of reboilers
downflow condenser
Axial thrust
19. 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
velocity compounding
compressor valve types
base load
20. Either fixed production or varying
hairpin hx
creep
thermal load control
reduce cavitation in extraction pumps
21. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87
starters transmit power to front end of gas turbnine by...
reduce cavitation in extraction pumps
R-22
legal requirements of record keeping
22. Sagging and hogging - 20-40rpm
barring gears prevent
fluid/air cooler
saturated air
supercharge
23. Controlled pressure from intermediate stages of turbine
a tandem turbine coupled by flexible couplings
axial air compressors
reaction turbine
extraction governor
24. Same principle as a turbine but acting in reverse
axial compressors
balancing pipe
convergent- divergent
when impulse turbine pressure drops
25. Contains dissolved oxygen
impulse turbine disadvantage
headworks
aerobic
extraction governor
26. 1. planning 2. implementation 3. review
heat exchanger materials
types of reciprocation compressors
project management
difference between diesel and gas engines
27. 1. Pressure compounding 2. velocity compounding 3. pressure- velocity compounding
inlet air unloader advantages
isochronous governing
3 types of communication
to reduce steam and blade velocities
28. Working fluid is compress then preheated in regenerator
R-12
double pipe hx
extraction pumps usually are _____ type
close cycle
29. Most widely used - least amount of steam
single flow turbines
sealing strips made of...
largest hx in a plant is...
double pipe hx
30. Small clearances between discs on shaft to...
Prevent thermal stresses
air leaks in condensers
extraction governor
Ammonia R-717
31. 1. simple design 2. less piping 3. no freezing hazard
bay
single flow turbines
ISO 9000 certified
air cooling advantages over water cooling
32. 1. plate 2. channel
cogeneration reduces energy costs by...
compressor valve types
typical temperature for outlet on oil coolers
crosshead
33. Cannot go below -18
centrifugal air compressor disadvantages
unfired
3 types of gas turbine combustors
sodium chloride
34. Unit produces electricity on an ongoing basis
typical temperature for outlet on oil coolers
solid injection designs
base load
brine
35. Results in a gain in velocity - the moving blades change direction producing force
moisture separator
pressure drop across first row of reation turbine
rotary compressor types
unfired
36. More rounded than impulse blading
reaction blading
types of fired heaters
typical temperature for outlet on oil coolers
non - condensing turbines used
37. Throttle body
legal requirements of record keeping
a tandem turbine coupled by flexible couplings
single point fuel injection
crosshead
38. Results in pressure drop and increased velocity
bakpressure turbines
centrifugal air compressors advantages
hunting
steam expanding through stationary nozzles
39. Pressure drops across the moving blades
thrust adjsusting gear
distinguishing reaction turbine
dry low NOx combustion systems
3 types of gas turbine combustors
40. The crankshaft and valve train
centrifugal air compressors advantages
Piezometer wells
disc rotors
camshaft is the link between
41. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%
2 stroke internal combustion
double- flow in reaction turbines
refrigeration safety controls
plant thermal effificienies
42. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
servo motor
types of refrigerant evaporators
solid injection designs
air take 'pulse cleaing systems'
43. Needs to a high vacuum present in system before charging
ammonia compression cycle high side components
steam expanding through stationary nozzles
refrigeration system charging
angstrom particles
44. Radiator type
bank
water boxes
fluid/air cooler
combined cycle cogeneration
45. '3 ports' 1. intake and exhaust 2. compression and ignititon
inlet air unloader advantages
2 stroke internal combustion
'topping cycle'
First stage of gas turbine nozzles made of...
46. Small pressure drop
plant thermal effificienies
when impulse turbine pressure drops
thrust adjsusting gear
convergent nozzles
47. King valve
liquid line aka
newton's 2nd law
single flow turbines
3 types of communication
48. 1. control range of 0 to 100% load 2. energy efficient
hairpin hx
ISO 9000 certified
First stage of gas turbine nozzles made of...
inlet modulating valve advantages
49. Chrome- iron alloy
thermocouple locations in fired heaters
power oil
refrigerant groups
sealing strips made of...
50. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
cogeneration application areas
gantt chart
dual shaft combined cycle cogeneration
sprial valve