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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. 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
marco cogeneration advantages
starters transmit power to front end of gas turbnine by...
baffle pitch
2. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting
expansion valve
environmental management program
aftercoolers
reaction turbine
3. Ground water monitoring device
non - condensing turbines used
thermocouple locations in fired heaters
duct burners in HRSG
Piezometer wells
4. Results in a gain in velocity - the moving blades change direction producing force
moisture separator
newton's 3rd law of motion
largest hx in a plant is...
pressure drop across first row of reation turbine
5. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring
expansion valve
methods to offset axial thrust
largest hx in a plant is...
servo motor
6. Discharge steam when excessive backpressure exists
sentinel vales
convergent nozzles
moisture separator
gudgeon pins
7. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature
crossflow
sodium chloride
barring gears prevent
staging
8. 1. list of all equipment 2. PM checklist 3. fequency 4. repairs and costs 5. record keeping 6. cost management
'topping cycle'
air leak tolerated in condenser up to...
components of PM program
special aspects of reaction turbine
9. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters
centrifugal air compressor disadvantages
dummy pistons
'gas turbine'
R-22
10. Steam expands and pressure drops as it passes through moving blades - unbalance pressure
reaction turbine
marco cogeneration advantages
primary cogeneration output
creep
11. Refers only to specificly to the turbine section
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12. 5mm in diameter
air dryer types
air leak tolerated in condenser up to...
axial compressors
anoxic
13. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips
tangs
environmental management program
reaction turbines use ____ bearings
expansion valve
14. DLN - reduce NOx down to 9ppm but have an increased combustion area
anaerobic
surface condenser
dry low NOx combustion systems
gas turbine disadvantages
15. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
downflow condenser
mechanical overspeed trip
types of refrigerant evaporators
purpose of a wet receiver
16. The crankshaft and valve train
camshaft is the link between
headworks
reduce cavitation in extraction pumps
gantt chart
17. 1. convergent 2. convergent- divergent
nozzles types
types of fired heaters
feature of impulse turbine
ejector condenser
18. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations
largest hx in a plant is...
mirco cogeneration advantages
gas turbine advantages
pressure compounding
19. Air drawn from atmosphere - working fluid
ejector condenser
open cycle
angstrom particles
isochronous governing
20. 0.577 times the inlet pressure
scavenging
bay
close cycle
critical pressure
21. Large turbines with a generator on each shaft
cross compound turbine
scavenging
cogeneration reduces energy costs by...
crosshead
22. The difference between the no- load and full- load speed - expressed as a %
droop
pressure drop across first row of reation turbine
reaction turbine components
ISO 9000 certified
23. 1. start- stop (sliding vane) 2. load- unload (rotary) 3. modulating inlet 4. mircoprocessor based control
rotary compressor control
coagulant aids
regulation compressor systems
steam expanding through stationary nozzles
24. Same principle as a turbine but acting in reverse
extraction governor
3 speed sensitive governors
oil free compressors
axial compressors
25. Removal of exhaust gases by blow air through
distinguishing reaction turbine
scavenging
surface condenser
axial compressors
26. drum rotors on reaction turbines eliminates...
secondary cogeneration output
hunting
Axial thrust
reaction turbines use ____ bearings
27. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure
disc rotors
types of turbines
Prevent thermal stresses
sealing strips made of...
28. Cause high discharge pressures - more power requirements - reduces capacity
types of turbines
open cycle
droop
non - condensables
29. Direct prosses applications - absorption refrigeration - heat recovery boiler
air cooling advantages over water cooling
secondary cogeneration output
'gas turbine'
govrenors classes
30. 1. compressor discharge 2. condenser 3. liquid receiver
BOD (biological oxygen demand)
ammonia compression cycle high side components
rotary compressor control
bank
31. Seperately forged discs or wheels and shrunk onto shaft
staging
disc rotors
Prevent thermal stresses
secondary cogeneration output
32. '3 ports' 1. intake and exhaust 2. compression and ignititon
compressor displacement
2 stroke internal combustion
air leaks in condensers
aerial coolers
33. Is the ratio of the discharge pressure to the intake pressure absolute
sentinel vales
double- flow in reaction turbines
compression ratio
scavenging
34. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter
gas turbine efficiencies based on...
power oil
air leaks in condensers
BOD (biological oxygen demand)
35. 1. written 2. spoken 3. visual
3 types of communication
expansion valve
liquid line aka
feature of impulse turbine
36. Straight condensing
dummy pistons
automatic extraction
ejector condenser
gas turbine blades should be replaced every
37. Overall master plan - comprehensive program
gantt chart
impulse force
power oil
single flow turbines
38. Small clearances between discs on shaft to...
Prevent thermal stresses
saturated air
gas turbine disadvantages
R-134a
39. Recuperative category - high pressure
aero- derivative turbines
power oil
brine
double pipe hx
40. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration
liquid line aka
air take 'pulse cleaing systems'
air dryer types
sodium chloride
41. One or more tube bundles - in one or more bays for an individual service or process
cross compound turbine
unit
types of turbines
types of reboilers
42. Change in momentum
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43. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs
condenser types
newton's 3rd law of motion
close cycle disadvantages
primary cogeneration output
44. Contains dissolved oxygen
gas turbine operating principles
aerobic
R-12
ISO 9000 certified
45. Pressure drops across the moving blades
distinguishing reaction turbine
compression ratio
servo motor
anaerobic
46. Centrifugal pumps
mirco cogeneration advantages
air ejectors
extraction pumps usually are _____ type
ISO 9000 certified
47. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust
counterflow
special aspects of reaction turbine
purpose of dry receiver
electronic overspeed trip
48. A verticle well is used to increase the NPSH - gives better performance and less cavitation
pressure compounding
reduce cavitation in extraction pumps
non - condensables
waste water treatment purpose
49. Refers to the production of power during overload demands
peak power
scavenging
inlet air unloader advantages
non - condensing turbines used
50. Has steam directed through baffles making 4 passes
balancing pipe
downflow condenser
centrifugal air compressor disadvantages
convergent- divergent