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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. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature
anaerobic digesters
open cycle
staging
cogeneration reduces energy costs by...
2. 'booster' compressor
two stage refrigeration system
droop
double flow turbines
aero- derivative turbines
3. Nickel steel - strong fully balanced rotor - expensive
dynamic compressor control
air ejectors
what large rotors are made of
pressure compounding
4. 5mm in diameter
'gas turbine'
air leak tolerated in condenser up to...
downflow condenser
3 types of communication
5. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust
3 types of gas turbine combustors
special aspects of reaction turbine
creep
water/oil separator
6. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
oil system components
natural draft cooling tower
mechanical overspeed trip
camshaft is the link between
7. Small clearances between discs on shaft to...
oil free compressors
rotary compressor types
Prevent thermal stresses
2 major factos affecting gas turbine efficiency and power
8. Each shaft needs a thrust bearing
what large rotors are made of
secondary cogeneration output
downflow condenser
a tandem turbine coupled by flexible couplings
9. Countries with small grids or specail grid requirements - has a high efficiency at base loads
dual shaft combined cycle cogeneration
environmental management program
BOD (biological oxygen demand)
cogeneration application areas
10. Eliminates thrust - steam admitted midway along casing
types of turbines
creep
double- flow in reaction turbines
project management
11. A1 - A2 - A3 - B1 - B2 and B3 A = toxicity not identified under 400ppm B = toxicity identified under 400ppm 1 = not flammable 2 = low flammable limit 3 = highly flammable
communication structure
staging
refrigerant groups
base load
12. KW at 15C standard at sealevel with 60% RH
capacity
gas turbine efficiencies based on...
inlet cooling methods - evaporative
closed cycle advantages
13. Most widely used - least amount of steam
condenser types
combined cycle cogeneration
single flow turbines
First stage of gas turbine nozzles made of...
14. Condensing turbines exhaust steam at...
impulse turbine disadvantage
Pressure below atmospheric
gas turbine components
double flow turbines
15. Working fluid is compress then preheated in regenerator
pressure sensitve governors
methods to offset axial thrust
close cycle
coagulant aids
16. Direct contact type - uses converging nozzles and in moderate vacuum
ejector condenser
R-22
steam expanding through stationary nozzles
water boxes
17. 1. can - annular 2. annular 3. single- can
pressure- velocity compounding
government regualtions for waste water
3 types of gas turbine combustors
sealing strips made of...
18. Unit produces electricity on an ongoing basis
reaction turbine components
avoid surging
clean turbine blading with
base load
19. Non - condensing turbine exhaust steam at...
Above or at atmospheric pressure
single flow turbines
First stage of gas turbine nozzles made of...
power oil
20. 1. individual pump system 2. distributor system 3. common rail system
solid injection designs
'gas turbine'
centrifugal air compressors advantages
'bottoming cycle'
21. 1. electricial purity 2. silver nitrate - milky white
counterflow
methods to detect cooling water leaks
combined cycle cogeneration
purpose of compressor lubrication
22. 1. Carbon ring 2. labyrinth seal 3. water seal
feature of impulse turbine
mechanical overspeed trip
shaft seals
compressor valve types
23. The condenser
base load
air cooling advantages over water cooling
largest hx in a plant is...
downflow condenser
24. The utilization of one form of input energy to generate two or more forms of output energy
hx principles
cogeneration
BOD (biological oxygen demand)
non - condensing turbines used
25. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices
typical temperature for outlet on oil coolers
plant thermal effificienies
electronic overspeed trip
oil system components
26. Needs to a high vacuum present in system before charging
coagulant aids
refrigeration system charging
downflow condenser
shaft seals
27. drum rotors on reaction turbines eliminates...
avoid surging
baffle pitch
Axial thrust
newton's 3rd law of motion
28. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration
compressor displacement
rotary compressor control
centrifugal air compressors advantages
air dryer types
29. 1. verticle cyclinder 2. cabin heater 3. central tube wall
turbocharge
special aspects of reaction turbine
types of fired heaters
sealing strips made of...
30. Large turbines with a generator on each shaft
dummy pistons
cross compound turbine
automatic extraction
inlet cooling methods - evaporative
31. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
velocity compounding
newton's 3rd law of motion
crosshead
rotary compressor types
32. 1. high pressure cutout 2. oil pressure cutout 3. pressure relief devices
refrigeration safety controls
extraction governor
anoxic
largest hx in a plant is...
33. Pressure drops across the moving blades
cross compound turbine
gantt chart
natural draft cooling tower
distinguishing reaction turbine
34. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases
downflow condenser
diesel engines aka
convergent- divergent
balancing pipe
35. Waste heat only
BOD (biological oxygen demand)
unfired
unit
mechanical draft
36. The volum swept out by the piston - same through all stages
sealing strips made of...
gas turbine disadvantages
surging
compressor displacement
37. Admirally brass or Munte metal - 25-40mm thick
condenser tube sheets made of...
2 stroke internal combustion
non - condensables
nozzles types
38. Contains dissolved oxygen
starters transmit power to front end of gas turbnine by...
mechanical governors
aerobic
marco cogeneration advantages
39. 1. to increase steam production 2. control superheater temperatures 3. meet process demands
3 speed sensitive governors
compressor valve types
tangs
duct burners in HRSG
40. Steam expands and pressure drops as it passes through moving blades - unbalance pressure
dynamic compressor control
ammonia compression cycle high side components
reaction turbine
anaerobic
41. 'huff and puff' methods
42. The crankshaft and valve train
counterflow
closed cycle advantages
compression ratio
camshaft is the link between
43. Used to open and close the by- pass port in a stator - varies the volum compressed air being produced
expansion valve
Above or at atmospheric pressure
sprial valve
impulse turbine disadvantage
44. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity
purpose of a wet receiver
anaerobic digesters
primary cogeneration output
saturated air
45. Wrist pins that connect pistons to rod - retained bu circlips
aero- derivative turbines
gudgeon pins
natural draft cooling tower
sprial valve
46. Straight condensing
isochronous governing
refrigeration system charging
close cycle
automatic extraction
47. Either fixed production or varying
saturated air
thermal load control
surface condenser
secondary cogeneration output
48. On the exhaust side - drives the blower - being connected to the same shaft - increases power by 50-70% as more air is forced into the engine
oil system components
turbocharge
hunting
air leak tolerated in condenser up to...
49. Simple generator - light - no battery - hotter spark at higher speeds
magneto ignition
rotary compressor types
sealing strips made of...
pressure compounding
50. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure
magneto ignition
pressure compounding
crosshead
types of turbines