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Test your basic knowledge |
Power Engineering 2
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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. individual pump system 2. distributor system 3. common rail system
mirco cogeneration advantages
solid injection designs
nozzles types
govrenors classes
2. Small clearances between discs on shaft to...
hunting
single flow turbines
Prevent thermal stresses
crosshead
3. 'booster' compressor
cross compound turbine
coalescing filters
two stage refrigeration system
gas turbine advantages
4. Each shaft needs a thrust bearing
a tandem turbine coupled by flexible couplings
gas turbine operating principles
coalescing filters
types of turbines
5. Has steam directed through baffles making 4 passes
downflow condenser
air leak tolerated in condenser up to...
ejector condenser
supercharge
6. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases
closed cycle advantages
largest hx in a plant is...
lube oil system basic functions
convergent- divergent
7. Too small to settle out - add floc
angstrom particles
creep
types of gas turbines
gas turbine advantages
8. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)
centrifugal air compressors advantages
pressure sensitve governors
methods to detect cooling water leaks
condenser safety devices
9. 1. Carbon ring 2. labyrinth seal 3. water seal
pressure sensitve governors
non - condensables
ejector condenser
shaft seals
10. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
2 stroke internal combustion
mechanical overspeed trip
refrigerant groups
gas turbine blades should be replaced every
11. Change in momentum
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12. Attempting to pick up a load - turbines in parallel
water boxes
hunting
components of PM program
cogeneration reduces energy costs by...
13. Straight condensing
gudgeon pins
automatic extraction
aerial coolers
adv of impulse turbine
14. Same principle as a turbine but acting in reverse
project management
biological removal of solids
secondary cogeneration output
axial compressors
15. 1. lubricate sliding surfaces 2. cool bearings
difference between diesel and gas engines
lube oil system basic functions
2 major factos affecting gas turbine efficiency and power
condenser safety devices
16. Removal of exhaust gases by blow air through
dummy pistons
scavenging
rotary compressor control
gas turbine advantages
17. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring
compressor valve types
types of turbines
expansion valve
rotary compressor types
18. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers
single flow turbines
cogeneration reduces energy costs by...
barring gears prevent
difference between diesel and gas engines
19. Direct prosses applications - absorption refrigeration - heat recovery boiler
secondary cogeneration output
coagulant aids
air take 'pulse cleaing systems'
Pressure below atmospheric
20. Increased efficiency due to decreased frictional losses
adv of impulse turbine
moisture separator
BOD (biological oxygen demand)
types of turbines
21. Refers to the production of power during overload demands
cross compound turbine
downflow condenser
bank
peak power
22. A thrust block that enables the axial position of the rotor to be controlled
thrust adjsusting gear
gas turbine advantages
air dryers
supercharge
23. Cannot go below -18
communication structure
condenser safety devices
sodium chloride
inlet modulating valve advantages
24. Independant of the governor - inductive sensor (magnetic speed pickups)
electronic overspeed trip
rotary compressor types
ISO 9000 certified
suction line unloading valve advantages
25. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure
types of turbines
dynamic compressor control
single shaft combine cycle cogeneration
turbine casings
26. Chrome- iron alloy
sealing strips made of...
refrigerant evaporator
turbocharge
aero- derivative turbines
27. 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
thrust adjsusting gear
double flow turbines
single flow turbines
gas turbine operating principles
28. Discharge steam when excessive backpressure exists
crosshead
avoid surging
types of turbines
sentinel vales
29. Ground water monitoring device
methods to detect cooling water leaks
Piezometer wells
single point fuel injection
condenser types
30. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet
double flow turbines
purpose of compressor lubrication
thermocouple locations in fired heaters
impulse turbine disadvantage
31. 1. control range of 0 to 100% load 2. energy efficient
cogeneration reduces energy costs by...
pressure- velocity compounding
compressor valve types
inlet modulating valve advantages
32. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic
Ammonia R-717
air leak tolerated in condenser up to...
open cycle
gas turbine efficiencies based on...
33. No dissolved oxygen but does contain nitrates
types of turbines
anoxic
water/oil separator
starters transmit power to front end of gas turbnine by...
34. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve
distinguishing reaction turbine
types of fired heaters
gas turbine components
avoid surging
35. Results in a gain in velocity - the moving blades change direction producing force
R-134a
government regualtions for waste water
pressure drop across first row of reation turbine
'turbine'
36. 1. single acting 2. double acting 3. two stage 4. tandem (first stage double acting - 2nd single) 5. free piston
types of reciprocation compressors
saturated air
ammonia compression cycle high side components
special aspects of reaction turbine
37. Type of hydrometer indicating % of salt in solution
automatic extraction
heat exchanger materials
salometer
impulse turbine disadvantage
38. The space wherein the liquid refrigerant absorbs heat and boils
base load
refrigerant evaporator
aerial coolers
crossflow
39. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
pressure sensitve governors
jet condensers
extraction governor
clean turbine blading with
40. Unit produces electricity on an ongoing basis
base load
velocity compounding
air ejectors
gas turbine disadvantages
41. Equal and opposite reation
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42. 1. Flyweights 2. coutner spring 3. function based on centrifugal force
'topping cycle'
rotary compressor types
refrigerant evaporator
mechanical governors
43. Polymers (polyelectrolytes)
double pipe hx
diesel engines aka
anaerobic
coagulant aids
44. Use of a rotary lobe air blower
shaft seals
tandem compound turbines
thrust adjsusting gear
supercharge
45. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%
pressure sensitve governors
combined cycle cogeneration
plant thermal effificienies
biological removal of solids
46. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
thermocouple locations in fired heaters
lube oil system basic functions
intercoolers
cogeneration application areas
47. Higher power and speeds
supercharge
double flow turbines
Above or at atmospheric pressure
higher compression ratios needed at...
48. 1. large volumes of air 2. simple and rugged 3. low maintenance
centrifugal air compressors advantages
4 stroke internal combustion
coalescing filters
mechanical drive turbine
49. Driving rotating equipment
dual shaft combined cycle cogeneration
condenser safety devices
primary cogeneration output
tangs
50. Servomotors
power oil
duct burners in HRSG
natural draft cooling tower
shaft seals
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