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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. Same principle as a turbine but acting in reverse
compressor displacement
liquid line aka
axial compressors
centrifugal air compressor disadvantages
2. 1. control range of 0 to 100% load 2. energy efficient
close cycle
shaft seals
4 stroke internal combustion
inlet modulating valve advantages
3. Small clearances between discs on shaft to...
air ejectors
oil free compressors
Prevent thermal stresses
staging
4. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
sentinel vales
cogeneration application areas
refrigeration system charging
staging
5. Servomotors
power oil
air leaks in condensers
plant thermal effificienies
purpose of a wet receiver
6. 1. lubricate sliding surfaces 2. cool bearings
newton's 2nd law
tangs
condenser safety devices
lube oil system basic functions
7. 1. plate 2. channel
gas turbine blades should be replaced every
balancing pipe
compressor valve types
sprial valve
8. 1. evaporator coil
sentinel vales
ammonia compression cycle low side
condenser tube sheets made of...
Axial thrust
9. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust
special aspects of reaction turbine
droop
waste water treatment purpose
dry low NOx combustion systems
10. Increased efficiency due to decreased frictional losses
adv of impulse turbine
ejector condenser
a tandem turbine coupled by flexible couplings
pressure compounding
11. 1. thrust bearings 2. dummy pistions 3. thrust adjusting gear
methods to offset axial thrust
cogeneration reduces energy costs by...
nozzels made of...
angstrom particles
12. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration
air dryer types
ISO 9000 certified
types of turbines
servo motor
13. Seperately forged discs or wheels and shrunk onto shaft
velocity compounding
disc rotors
air leak tolerated in condenser up to...
waste water treatment purpose
14. Use of a rotary lobe air blower
nozzels made of...
two stage refrigeration system
supercharge
non - condensables
15. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs
3 speed sensitive governors
mechanical draft
bakpressure turbines
close cycle disadvantages
16. Discharge steam when excessive backpressure exists
shaft seals
compression ratio
types of reboilers
sentinel vales
17. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles
air ejectors
baffle pitch
plant thermal effificienies
3 types of communication
18. 1. list of all equipment 2. PM checklist 3. fequency 4. repairs and costs 5. record keeping 6. cost management
condenser tube sheets made of...
unit
components of PM program
crossflow
19. 1. use clean burning fuels 2. less fuel being used - saving energy reserves 3. electrical production onsite lowers construction demands for new sites and reduces transmission line power losses
types of gas turbines
marco cogeneration advantages
nozzels made of...
inlet cooling methods - evaporative
20. Results in a gain in velocity - the moving blades change direction producing force
baffle pitch
combined cycle cogeneration
air dryer types
pressure drop across first row of reation turbine
21. Most widely used - least amount of steam
types of refrigerant evaporators
purpose of a wet receiver
single flow turbines
marco cogeneration advantages
22. No dissolved oxygen but does contain nitrates
R-22
anoxic
3 types of communication
liquid line aka
23. 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
water/oil separator
critical path method (CPM)
air dryer types
hairpin hx
24. 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
nozzles types
condenser tube attachment methods
waste water treatment plant components
anaerobic digesters
25. Removal of exhaust gases by blow air through
scavenging
inlet modulating valve advantages
types of turbines
servo motor
26. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases
supercharge
solid injection designs
purpose of dry receiver
convergent- divergent
27. Each stage seperated by partitions - nozzles set into diaphragms
natural draft cooling tower
types of gas turbines
isochronous governing
pressure compounding
28. Admirally brass or Munte metal - 25-40mm thick
shaft seals
condenser tube sheets made of...
3 types of gas turbine combustors
purpose of compressor lubrication
29. 1. individual pump system 2. distributor system 3. common rail system
automatic extraction
oil free compressors
solid injection designs
difference between diesel and gas engines
30. Cool compressed air before point of use
pressure compounding
methods to offset axial thrust
aftercoolers
types of reciprocation compressors
31. Controlled pressure from intermediate stages of turbine
cross compound turbine
non - condensables
angstrom particles
extraction governor
32. 1. Aero- derivate 2. Heavy duty
types of gas turbines
crossflow
refrigeration safety controls
nozzels made of...
33. Non - condensing turbine exhaust steam at...
rotary compressor types
types of reciprocation compressors
Above or at atmospheric pressure
balancing pipe
34. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting
types of turbines
types of turbines
environmental management program
centrifugal air compressor disadvantages
35. Working fluid is compress then preheated in regenerator
close cycle
double pipe hx
Pressure below atmospheric
brine
36. Refers only to specificly to the turbine section
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37. Chrome- iron alloy
staging
gantt chart
inlet modulating valve advantages
sealing strips made of...
38. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads
cogeneration reduces energy costs by...
isochronous governing
pressure compounding
cogeneration application areas
39. The crankshaft and valve train
camshaft is the link between
two stage refrigeration system
unit
compression ratio
40. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8
clean turbine blading with
droop
R-12
base load
41. Moisture removed by centrifugal force
moisture separator
ejector condenser
camshaft is the link between
capacity
42. '3 ports' 1. intake and exhaust 2. compression and ignititon
refrigeration safety controls
close cycle disadvantages
ejector condenser
2 stroke internal combustion
43. The condenser
nozzles types
newton's 2nd law
largest hx in a plant is...
clean turbine blading with
44. Simple generator - light - no battery - hotter spark at higher speeds
reaction turbines use ____ bearings
magneto ignition
reaction blading
Prevent thermal stresses
45. Is the ratio of the discharge pressure to the intake pressure absolute
creep
steam expanding through stationary nozzles
compression ratio
special aspects of reaction turbine
46. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost
nozzels made of...
single shaft combine cycle cogeneration
difference between diesel and gas engines
primary cogeneration output
47. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve
reaction blading
pressure- velocity compounding
disc rotors
avoid surging
48. Independant of the governor - inductive sensor (magnetic speed pickups)
peak power
crosshead
mechanical governors
electronic overspeed trip
49. Grit chambers and screens for waster water system
compressor displacement
lube oil system basic functions
tangs
headworks
50. Center- to- center distance between baffles
velocity compounding
baffle pitch
ISO 9000 certified
sealing strips made of...