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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. Recuperative category - high pressure
close cycle disadvantages
jet condensers
double pipe hx
reaction turbine components
2. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)
natural draft cooling tower
staging
regulation compressor systems
selective catalytic reduction (SCR)
3. 1. increases net power 2. clean working fluid 3. cheap fuel can be used
thermal load control
purpose of dry receiver
closed cycle advantages
dry low NOx combustion systems
4. Wrist pins that connect pistons to rod - retained bu circlips
diesel engines aka
gudgeon pins
BOD (biological oxygen demand)
axial compressors
5. Chrome- iron alloy
largest hx in a plant is...
sealing strips made of...
types of reboilers
anaerobic digesters
6. 1. intake 2. compression 3. power 4. exhaust
reaction turbines use ____ bearings
compression ratio
4 stroke internal combustion
trunk type piston
7. Made of steel - used for double acting pistons - acts as a piston rod
jet condensers
typical temperature for outlet on oil coolers
single flow turbines
crosshead
8. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor
surging
air dryer types
waste water treatment plant components
types of gas turbines
9. Used to open and close the by- pass port in a stator - varies the volum compressed air being produced
govrenors classes
sprial valve
hunting
closed cycle advantages
10. Condensing turbines exhaust steam at...
Pressure below atmospheric
eutectic solution
special aspects of reaction turbine
combined cycle cogeneration
11. Same principle as a turbine but acting in reverse
mechanical draft
sentinel vales
servo motor
axial compressors
12. Air flow is upward
counterflow
selective catalytic reduction (SCR)
air ejectors
open cycle
13. 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
sodium chloride
waste water treatment purpose
critical path method (CPM)
cross compound turbine
14. 1. convergent 2. convergent- divergent
automatic extraction
condenser safety devices
'bottoming cycle'
nozzles types
15. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve
close cycle disadvantages
what large rotors are made of
air cooling advantages over water cooling
avoid surging
16. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
bakpressure turbines
combined cycle cogeneration
jet condensers
air dryer types
17. Waste heat only
reaction blading
unfired
droop
air leaks in condensers
18. 1. Aero- derivate 2. Heavy duty
3 types of communication
3 speed sensitive governors
types of gas turbines
Pressure below atmospheric
19. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled
condenser tube attachment methods
single flow turbines
jacking oil system
regulation compressor systems
20. Removal of exhaust gases by blow air through
4 stroke internal combustion
non - condensables
scavenging
closed cycle advantages
21. Used on large turbines to supply lower part of the bearing with oil to prevent metal to metal contact
bank
purpose of a wet receiver
crosshead
jacking oil system
22. Air drawn from atmosphere - working fluid
open cycle
largest hx in a plant is...
water/oil separator
trunk type piston
23. 1. spray 2. fog 3. special evaporator pads
air leaks in condensers
disc rotors
feature of impulse turbine
inlet cooling methods - evaporative
24. More rounded than impulse blading
waste water treatment plant components
speed droop
reaction blading
Prevent thermal stresses
25. Large turbines with a generator on each shaft
cross compound turbine
turbine casings
critical pressure
to reduce steam and blade velocities
26. Results in a gain in velocity - the moving blades change direction producing force
refrigeration system charging
salometer
R-12
pressure drop across first row of reation turbine
27. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)
velocity compounding
types of turbines
R-12
condenser safety devices
28. 1. kettle 2. thermosyphon horizontal 3. thermosyphon vertical
types of reboilers
gantt chart
condenser tube attachment methods
gudgeon pins
29. '3 ports' 1. intake and exhaust 2. compression and ignititon
2 stroke internal combustion
angstrom particles
R-22
2 major factos affecting gas turbine efficiency and power
30. 1. brass 2. copper 3. cupronickel
droop
air leaks in condensers
government regualtions for waste water
heat exchanger materials
31. Each stage seperated by partitions - nozzles set into diaphragms
pressure compounding
gas turbine operating principles
dual shaft combined cycle cogeneration
expansion valve
32. Throttle body
purpose of a wet receiver
single point fuel injection
combined cycle cogeneration
centrifugal air compressor disadvantages
33. At high temperatures a material stretches
dry low NOx combustion systems
diesel engines aka
types of reboilers
creep
34. Most widely used - least amount of steam
single shaft combine cycle cogeneration
when impulse turbine pressure drops
single flow turbines
saturated air
35. Small clearances between discs on shaft to...
Prevent thermal stresses
pressure sensitve governors
inlet cooling methods - evaporative
suction line unloading valve advantages
36. 75 -000 to 100 -00 hours of operation
bakpressure turbines
electronic overspeed trip
cogeneration reduces energy costs by...
gas turbine blades should be replaced every
37. 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
refrigeration safety controls
types of turbines
expansion valve
anaerobic digesters
38. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity
purpose of a wet receiver
impulse turbine disadvantage
thermocouple locations in fired heaters
angstrom particles
39. Hydraulic cylinder or pisston on a governor
special aspects of reaction turbine
servo motor
government regualtions for waste water
tangs
40. Pressure does not drop across the moving blades
anoxic
feature of impulse turbine
typical temperature for outlet on oil coolers
secondary cogeneration output
41. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface
pressure sensitve governors
mechanical overspeed trip
hairpin hx
double flow turbines
42. Is the ratio of the discharge pressure to the intake pressure absolute
turbine casings
R-134a
compression ratio
environmental management program
43. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters
mechanical drive turbine
centrifugal air compressor disadvantages
refrigerant evaporator
compressor displacement
44. Use of a rotary lobe air blower
condenser types
supercharge
double pipe hx
sodium chloride
45. One or more tube bundles - in one or more bays for an individual service or process
hairpin hx
unit
heat exchanger materials
shaft seals
46. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)
reaction turbine
rotary compressor types
hunting
government regualtions for waste water
47. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature
staging
headworks
a tandem turbine coupled by flexible couplings
isochronous governing
48. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy
First stage of gas turbine nozzles made of...
moisture separator
types of refrigerant evaporators
capacity
49. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
types of refrigerant evaporators
water boxes
3 types of gas turbine combustors
secondary cogeneration output
50. The space wherein the liquid refrigerant absorbs heat and boils
air cooling advantages over water cooling
refrigerant evaporator
jet condensers
tandem compound turbines