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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. walnuts 2. rice 3. carbo- blase 4. offline water wash - best method
sentinel vales
clean turbine blading with
water boxes
air leaks in condensers
2. Controlled pressure from intermediate stages of turbine
intercoolers
extraction governor
gas turbine operating principles
non - condensables
3. Rows of stationart baldes with alternating rows of moving blades
plant thermal effificienies
gas turbine efficiencies based on...
reaction turbine components
waste water treatment plant components
4. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve
mechanical drive turbine
refrigerant groups
mirco cogeneration advantages
avoid surging
5. At high temperatures a material stretches
refrigeration system charging
creep
automatic extraction
coagulant aids
6. The space wherein the liquid refrigerant absorbs heat and boils
combined cycle cogeneration
brine
refrigerant evaporator
aero- derivative turbines
7. The difference between the no- load and full- load speed - expressed as a %
coalescing filters
brine
refrigeration safety controls
droop
8. Dry surface coolers - no contact convection hx - aka finned tube exchangers
aerial coolers
gas turbine efficiencies based on...
impulse turbine disadvantage
peak power
9. 1. written 2. spoken 3. visual
3 types of communication
purpose of a wet receiver
starters transmit power to front end of gas turbnine by...
servo motor
10. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet
gudgeon pins
thermocouple locations in fired heaters
duct burners in HRSG
rotary compressor types
11. Each shaft needs a thrust bearing
single point fuel injection
refrigerant evaporator
environmental management program
a tandem turbine coupled by flexible couplings
12. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
angstrom particles
cogeneration application areas
'bottoming cycle'
velocity compounding
13. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations
refrigeration system charging
angstrom particles
mirco cogeneration advantages
tandem compound turbines
14. 43-49 degrees C
non - condensing turbines used
pressure drop across first row of reation turbine
typical temperature for outlet on oil coolers
condenser types
15. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface
droop
hairpin hx
bay
pressure sensitve governors
16. 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
centrifugal air compressor disadvantages
anaerobic digesters
extraction governor
inlet cooling methods - evaporative
17. 1. Carbon ring 2. labyrinth seal 3. water seal
shaft seals
pressure drop across first row of reation turbine
what large rotors are made of
mechanical draft
18. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips
jet condensers
dry low NOx combustion systems
mechanical overspeed trip
tangs
19. Results in a gain in velocity - the moving blades change direction producing force
pressure drop across first row of reation turbine
when impulse turbine pressure drops
air dryer types
sodium chloride
20. Calcium chloride and water - -51
higher compression ratios needed at...
Ammonia R-717
counterflow
brine
21. 1. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing
compressor valve types
axial compressors
purpose of compressor lubrication
disc rotors
22. 1. large volumes of air 2. simple and rugged 3. low maintenance
pressure- velocity compounding
impulse force
types of refrigerant evaporators
centrifugal air compressors advantages
23. 1. plate 2. channel
pressure drop across first row of reation turbine
compressor valve types
double flow turbines
thermal load control
24. Independant of the governor - inductive sensor (magnetic speed pickups)
electronic overspeed trip
suction line unloading valve advantages
ejector condenser
types of reciprocation compressors
25. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer
jet condensers
axial compressors
purpose of dry receiver
liquid line aka
26. 75 -000 to 100 -00 hours of operation
gas turbine components
to reduce steam and blade velocities
gas turbine blades should be replaced every
biological removal of solids
27. Countries with small grids or specail grid requirements - has a high efficiency at base loads
dual shaft combined cycle cogeneration
capacity
largest hx in a plant is...
sentinel vales
28. 5mm in diameter
Pressure below atmospheric
mechanical overspeed trip
methods to offset axial thrust
air leak tolerated in condenser up to...
29. Moisture removed by centrifugal force
clean turbine blading with
refrigerant groups
air take 'pulse cleaing systems'
moisture separator
30. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing
secondary cogeneration output
reaction turbines use ____ bearings
anoxic
double- flow in reaction turbines
31. 1. Nozzle - impulse turbine only 2. throttle - reaction turbine only 3. bypass or overload - used on both turbines
3 speed sensitive governors
ejector condenser
Ammonia R-717
distinguishing reaction turbine
32. 'huff and puff' methods
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183
33. 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
surface condenser
gas turbine operating principles
impulse turbine disadvantage
condenser tube sheets made of...
34. 1. convergent 2. convergent- divergent
magneto ignition
nozzles types
bakpressure turbines
bank
35. 1. lowers power consumption 2. load changes frequently 3. pilot valve controls loading - adjustable
single shaft combine cycle cogeneration
inlet air unloader advantages
angstrom particles
ISO 9000 certified
36. zeolite molecular sieve desiccant
trunk type piston
air dryers
dry low NOx combustion systems
single flow turbines
37. Grit chambers and screens for waster water system
air ejectors
headworks
non - condensables
downflow condenser
38. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
velocity compounding
sodium chloride
thrust adjsusting gear
refrigerant groups
39. A thrust block that enables the axial position of the rotor to be controlled
3 types of communication
pressure compounding
thrust adjsusting gear
bakpressure turbines
40. Simple generator - light - no battery - hotter spark at higher speeds
BOD (biological oxygen demand)
jet condensers
ammonia compression cycle high side components
magneto ignition
41. A verticle well is used to increase the NPSH - gives better performance and less cavitation
camshaft is the link between
gas turbine advantages
reduce cavitation in extraction pumps
avoid surging
42. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)
rotary compressor types
newton's 3rd law of motion
droop
single shaft combine cycle cogeneration
43. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87
R-22
moisture separator
Above or at atmospheric pressure
fluid/air cooler
44. 0.577 times the inlet pressure
critical pressure
rotary compressor types
creep
plant thermal effificienies
45. Very high speed with extremely high centrigufal force and high frictional losses
impulse turbine disadvantage
fluid/air cooler
components of PM program
bakpressure turbines
46. Defined as one or more tube bundle - served by two or more fans complete with aux equipment
cogeneration application areas
bay
oil system components
'gas turbine'
47. Admirally brass or Munte metal - 25-40mm thick
convergent nozzles
condenser tube sheets made of...
distinguishing reaction turbine
camshaft is the link between
48. Direct contact type - uses converging nozzles and in moderate vacuum
ammonia compression cycle low side
velocity compounding
ejector condenser
oil system components
49. 1. Aero- derivate 2. Heavy duty
centrifugal air compressor disadvantages
brine
cogeneration reduces energy costs by...
types of gas turbines
50. 1. Condensing 2. non - condensing (backpressure)
single flow turbines
government regualtions for waste water
steam expanding through stationary nozzles
types of turbines