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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. plate 2. channel
R-134a
compressor valve types
condenser safety devices
special aspects of reaction turbine
2. At high temperatures a material stretches
condenser tube sheets made of...
tangs
creep
mechanical draft
3. Control a steady backpressure - sensing element in exhuast line
double pipe hx
pressure sensitve governors
gudgeon pins
salometer
4. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface
scavenging
hairpin hx
surging
nozzles types
5. Refers only to specificly to the turbine section
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6. 1. Responsive to speed changes 2. responsive to pressurre changes
gas turbine operating principles
Pressure below atmospheric
govrenors classes
purpose of dry receiver
7. Small clearances between discs on shaft to...
types of refrigerant evaporators
types of reboilers
ISO 9000 certified
Prevent thermal stresses
8. Cause high discharge pressures - more power requirements - reduces capacity
what large rotors are made of
air ejectors
non - condensables
reaction turbine components
9. The condenser
pressure drop across first row of reation turbine
selective catalytic reduction (SCR)
axial compressors
largest hx in a plant is...
10. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)
rotary compressor types
gas turbine components
purpose of compressor lubrication
intercoolers
11. Cool compressed air before point of use
what large rotors are made of
aftercoolers
centrifugal air compressor disadvantages
sentinel vales
12. Pressure drops across the moving blades
bay
sentinel vales
distinguishing reaction turbine
creep
13. Moisture removed by centrifugal force
moisture separator
largest hx in a plant is...
dual shaft combined cycle cogeneration
reaction turbines use ____ bearings
14. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function
close cycle disadvantages
intercoolers
isochronous governing
types of refrigerant evaporators
15. Sagging and hogging - 20-40rpm
cogeneration
double flow turbines
barring gears prevent
solid injection designs
16. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work
impulse buckets
project management
inlet modulating valve advantages
surface condenser
17. Small pressure drop
convergent nozzles
compressor valve types
Above or at atmospheric pressure
mirco cogeneration advantages
18. Either fixed production or varying
lube oil system basic functions
centrifugal air compressor disadvantages
pressure- velocity compounding
thermal load control
19. Contains 0.5kg of moisture for every 28 cubic meter of air
pressure sensitve governors
saturated air
eutectic solution
dynamic compressor control
20. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
unfired
aerial coolers
velocity compounding
electronic overspeed trip
21. The change in sped that resutls from an increase in load
water/oil separator
plant thermal effificienies
speed droop
refrigeration safety controls
22. Center- to- center distance between baffles
centrifugal air compressors advantages
staging
baffle pitch
steam expanding through stationary nozzles
23. 'huff and puff' methods
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24. Working fluid is compress then preheated in regenerator
close cycle
downflow condenser
3 types of communication
waste water treatment plant components
25. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters
sprial valve
dynamic compressor control
crosshead
centrifugal air compressor disadvantages
26. The difference between the no- load and full- load speed - expressed as a %
pressure- velocity compounding
biological removal of solids
tandem compound turbines
droop
27. Type of hydrometer indicating % of salt in solution
when impulse turbine pressure drops
base load
clean turbine blading with
salometer
28. Wrist pins that connect pistons to rod - retained bu circlips
open cycle
gudgeon pins
regulation compressor systems
2 major factos affecting gas turbine efficiency and power
29. 1. list of all equipment 2. PM checklist 3. fequency 4. repairs and costs 5. record keeping 6. cost management
components of PM program
air dryers
gas turbine components
non - condensables
30. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy
First stage of gas turbine nozzles made of...
sealing strips made of...
aerobic
gas turbine efficiencies based on...
31. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
single flow turbines
hx principles
inlet cooling methods - evaporative
mechanical overspeed trip
32. Rows of stationart baldes with alternating rows of moving blades
starters transmit power to front end of gas turbnine by...
condenser tube sheets made of...
reaction turbine components
mechanical governors
33. Each shaft needs a thrust bearing
types of turbines
hunting
a tandem turbine coupled by flexible couplings
govrenors classes
34. Forced or induced draft
dummy pistons
mechanical draft
jacking oil system
sentinel vales
35. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring
gudgeon pins
tandem compound turbines
eutectic solution
expansion valve
36. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips
steam expanding through stationary nozzles
combined cycle cogeneration
coagulant aids
tangs
37. Moving blades on a rotor
extraction pumps usually are _____ type
largest hx in a plant is...
types of reboilers
impulse buckets
38. Non - condensing turbine exhaust steam at...
Above or at atmospheric pressure
single shaft combine cycle cogeneration
gas turbine efficiencies based on...
bay
39. 'booster' compressor
condenser safety devices
two stage refrigeration system
double- flow in reaction turbines
close cycle
40. 1. to increase steam production 2. control superheater temperatures 3. meet process demands
staging
reaction turbine components
impulse turbine disadvantage
duct burners in HRSG
41. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity
air leaks in condensers
3 types of communication
creep
purpose of a wet receiver
42. zeolite molecular sieve desiccant
gas turbine advantages
thermal load control
purpose of a wet receiver
air dryers
43. 43-49 degrees C
balancing pipe
typical temperature for outlet on oil coolers
types of fired heaters
refrigeration system charging
44. Higher altitudes
higher compression ratios needed at...
R-134a
nozzels made of...
starters transmit power to front end of gas turbnine by...
45. 1. can - annular 2. annular 3. single- can
cogeneration reduces energy costs by...
thermocouple locations in fired heaters
pressure sensitve governors
3 types of gas turbine combustors
46. To remove and properly dispose of pollutants
thermal load control
waste water treatment purpose
4 stroke internal combustion
cogeneration reduces energy costs by...
47. 1. electricial purity 2. silver nitrate - milky white
inlet modulating valve advantages
methods to detect cooling water leaks
servo motor
mechanical governors
48. Air flow is upward
tangs
counterflow
lube oil system basic functions
clean turbine blading with
49. Grit chambers and screens for waster water system
gudgeon pins
headworks
air leak tolerated in condenser up to...
types of reciprocation compressors
50. Calcium chloride and water - -51
surface condenser
condenser tube attachment methods
refrigeration system charging
brine