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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. Straight condensing
staging
sealing strips made of...
automatic extraction
pressure sensitve governors
2. Sagging and hogging - 20-40rpm
thrust adjsusting gear
legal requirements of record keeping
balancing pipe
barring gears prevent
3. 1. CCME 2. CEQG 3. CWQG 4. US EPA
government regualtions for waste water
extraction governor
special aspects of reaction turbine
pressure- velocity compounding
4. Unit produces electricity on an ongoing basis
base load
moisture separator
cogeneration
suction line unloading valve advantages
5. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily
water boxes
suction line unloading valve advantages
gudgeon pins
dynamic compressor control
6. Eliminates thrust - steam admitted midway along casing
legal requirements of record keeping
gudgeon pins
purpose of dry receiver
double- flow in reaction turbines
7. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure
inlet air unloader advantages
types of turbines
gantt chart
'topping cycle'
8. 1. Pressure compounding 2. velocity compounding 3. pressure- velocity compounding
camshaft is the link between
expansion valve
to reduce steam and blade velocities
First stage of gas turbine nozzles made of...
9. 1. compression ration across compressor 2. turbine inlet temperature
BOD (biological oxygen demand)
2 major factos affecting gas turbine efficiency and power
centrifugal air compressors advantages
lube oil system basic functions
10. DLN - reduce NOx down to 9ppm but have an increased combustion area
dry low NOx combustion systems
centrifugal air compressors advantages
double pipe hx
brine
11. Throttle body
special aspects of reaction turbine
ammonia compression cycle low side
disc rotors
single point fuel injection
12. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
types of refrigerant evaporators
rotary compressor types
impulse turbine disadvantage
close cycle disadvantages
13. Have advantage of high efficiencies - 10% greater than centrifugal compressors
natural draft cooling tower
impulse buckets
coalescing filters
axial air compressors
14. Quantity ofr compressed air and delivered air by the compressor
surging
cogeneration application areas
capacity
refrigeration system charging
15. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust
government regualtions for waste water
special aspects of reaction turbine
2 major factos affecting gas turbine efficiency and power
3 speed sensitive governors
16. Results in pressure drop and increased velocity
First stage of gas turbine nozzles made of...
hx principles
steam expanding through stationary nozzles
3 speed sensitive governors
17. Direct prosses applications - absorption refrigeration - heat recovery boiler
capacity
secondary cogeneration output
saturated air
oil free compressors
18. 1. brass 2. copper 3. cupronickel
double pipe hx
axial air compressors
close cycle disadvantages
heat exchanger materials
19. Up to 60-90%
power oil
'bottoming cycle'
cogeneration reduces energy costs by...
special aspects of reaction turbine
20. Cannot go below -18
sodium chloride
aerobic
mechanical governors
types of fired heaters
21. 1. control range of 0 to 100% load 2. energy efficient
critical path method (CPM)
duct burners in HRSG
coagulant aids
inlet modulating valve advantages
22. Recuperative category - high pressure
double pipe hx
gas turbine efficiencies based on...
components of PM program
dummy pistons
23. Use antifriction bearings
speed droop
gas turbine operating principles
aero- derivative turbines
higher compression ratios needed at...
24. 1. Carbon ring 2. labyrinth seal 3. water seal
compressor valve types
to reduce steam and blade velocities
a tandem turbine coupled by flexible couplings
shaft seals
25. Small clearances between discs on shaft to...
peak power
Prevent thermal stresses
marco cogeneration advantages
communication structure
26. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter
suction line unloading valve advantages
BOD (biological oxygen demand)
expansion valve
marco cogeneration advantages
27. Non - condensing turbine exhaust steam at...
bakpressure turbines
reduce cavitation in extraction pumps
Above or at atmospheric pressure
base load
28. 1. high pressure cutout 2. oil pressure cutout 3. pressure relief devices
refrigeration safety controls
turbine casings
biological removal of solids
pressure drop across first row of reation turbine
29. Compression ignititon engines
rotary compressor control
diesel engines aka
critical path method (CPM)
First stage of gas turbine nozzles made of...
30. To remove and properly dispose of pollutants
waste water treatment purpose
power oil
electronic overspeed trip
two stage refrigeration system
31. Discharge steam when excessive backpressure exists
sentinel vales
fluid/air cooler
dynamic compressor control
types of reciprocation compressors
32. Type of hydrometer indicating % of salt in solution
coalescing filters
natural draft cooling tower
salometer
counterflow
33. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations
primary cogeneration output
mirco cogeneration advantages
gas turbine components
2 stroke internal combustion
34. Made of steel - used for double acting pistons - acts as a piston rod
power oil
types of fired heaters
crosshead
baffle pitch
35. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers
difference between diesel and gas engines
camshaft is the link between
single point fuel injection
govrenors classes
36. Made of polyethylene - skimming from the surface
axial air compressors
water/oil separator
bank
air ejectors
37. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy
oil free compressors
inlet modulating valve advantages
First stage of gas turbine nozzles made of...
secondary cogeneration output
38. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87
R-22
reaction turbine components
thrust adjsusting gear
counterflow
39. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
distinguishing reaction turbine
brine
mechanical overspeed trip
impulse force
40. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs
mechanical drive turbine
extraction governor
close cycle disadvantages
govrenors classes
41. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring
jacking oil system
expansion valve
servo motor
refrigerant evaporator
42. KW at 15C standard at sealevel with 60% RH
R-12
types of fired heaters
gas turbine efficiencies based on...
single flow turbines
43. 1. operates on a temperature difference between substances 2. warm to cold only 3. rate of transfer depends on temperature difference
bay
hx principles
automatic extraction
barring gears prevent
44. Counter act force and load on thrust bearings
impulse force
salometer
dummy pistons
cogeneration application areas
45. 1. evaporator coil
ammonia compression cycle low side
eutectic solution
isochronous governing
to reduce steam and blade velocities
46. The volum swept out by the piston - same through all stages
cogeneration application areas
R-134a
compressor displacement
eutectic solution
47. Removal of exhaust gases by blow air through
oil system components
scavenging
purpose of compressor lubrication
primary cogeneration output
48. Condensing turbines exhaust steam at...
axial air compressors
air cooling advantages over water cooling
Pressure below atmospheric
mechanical draft
49. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%
plant thermal effificienies
a tandem turbine coupled by flexible couplings
pressure compounding
natural draft cooling tower
50. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor
surging
lube oil system basic functions
dry low NOx combustion systems
thermal load control