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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. Center- to- center distance between baffles
types of turbines
baffle pitch
to reduce steam and blade velocities
air take 'pulse cleaing systems'
2. Sagging and hogging - 20-40rpm
gantt chart
types of gas turbines
barring gears prevent
scavenging
3. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic
secondary cogeneration output
Ammonia R-717
Prevent thermal stresses
Above or at atmospheric pressure
4. Very high speed with extremely high centrigufal force and high frictional losses
impulse turbine disadvantage
air leak tolerated in condenser up to...
sentinel vales
staging
5. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers
mechanical draft
coalescing filters
difference between diesel and gas engines
saturated air
6. 1. contact - 'jet' 2. surface
lube oil system basic functions
2 stroke internal combustion
condenser types
pressure sensitve governors
7. Refers to the production of power during overload demands
newton's 3rd law of motion
velocity compounding
peak power
3 types of gas turbine combustors
8. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
cogeneration reduces energy costs by...
mechanical overspeed trip
reaction turbine
rotary compressor types
9. Polymers (polyelectrolytes)
pressure sensitve governors
adv of impulse turbine
isochronous governing
coagulant aids
10. Quantity ofr compressed air and delivered air by the compressor
sentinel vales
tandem compound turbines
capacity
peak power
11. Counter act force and load on thrust bearings
dummy pistons
R-12
downflow condenser
project management
12. Grit chambers and screens for waster water system
balancing pipe
biological removal of solids
headworks
types of reciprocation compressors
13. 1. Condensing 2. non - condensing (backpressure)
reaction turbine
types of turbines
bay
plant thermal effificienies
14. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices
to reduce steam and blade velocities
largest hx in a plant is...
oil system components
inlet cooling methods - evaporative
15. Velocity increases as passes through nozzles
gudgeon pins
when impulse turbine pressure drops
hunting
centrifugal air compressors advantages
16. 75 -000 to 100 -00 hours of operation
barring gears prevent
moisture separator
gas turbine blades should be replaced every
types of reciprocation compressors
17. Made of polyethylene - skimming from the surface
adv of impulse turbine
disc rotors
critical pressure
water/oil separator
18. Admirally brass or Munte metal - 25-40mm thick
condenser tube sheets made of...
barring gears prevent
'gas turbine'
dummy pistons
19. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure
gas turbine advantages
types of turbines
extraction governor
'turbine'
20. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity
purpose of a wet receiver
waste water treatment plant components
aero- derivative turbines
closed cycle advantages
21. Use teflon or carbon to lubricate system
oil free compressors
cogeneration reduces energy costs by...
coagulant aids
gas turbine disadvantages
22. The utilization of one form of input energy to generate two or more forms of output energy
air leak tolerated in condenser up to...
2 stroke internal combustion
cogeneration
waste water treatment purpose
23. 1. increases net power 2. clean working fluid 3. cheap fuel can be used
nozzles types
closed cycle advantages
marco cogeneration advantages
moisture separator
24. 1. high manufacturing costs 2. slow speed changes 3. low efficiencies at low throttle
axial compressors
air dryers
air ejectors
gas turbine disadvantages
25. Large turbines with a generator on each shaft
cross compound turbine
a tandem turbine coupled by flexible couplings
Pressure below atmospheric
selective catalytic reduction (SCR)
26. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
liquid line aka
jet condensers
condenser safety devices
3 types of gas turbine combustors
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
reduce cavitation in extraction pumps
gas turbine operating principles
anoxic
condenser tube sheets made of...
28. Increased efficiency due to decreased frictional losses
gas turbine efficiencies based on...
adv of impulse turbine
Ammonia R-717
compressor valve types
29. KW at 15C standard at sealevel with 60% RH
refrigeration safety controls
gas turbine efficiencies based on...
counterflow
air leak tolerated in condenser up to...
30. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles
single point fuel injection
unit
inlet modulating valve advantages
air ejectors
31. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
4 stroke internal combustion
bakpressure turbines
tandem compound turbines
types of refrigerant evaporators
32. 1. individual pump system 2. distributor system 3. common rail system
gas turbine disadvantages
pressure compounding
project management
solid injection designs
33. 1. spray 2. fog 3. special evaporator pads
refrigerant evaporator
duct burners in HRSG
inlet cooling methods - evaporative
dry low NOx combustion systems
34. 1. brass 2. copper 3. cupronickel
heat exchanger materials
closed cycle advantages
duct burners in HRSG
project management
35. 1. verticle cyclinder 2. cabin heater 3. central tube wall
types of fired heaters
angstrom particles
gas turbine operating principles
non - condensables
36. Cause high discharge pressures - more power requirements - reduces capacity
sentinel vales
close cycle
non - condensables
clean turbine blading with
37. 5mm in diameter
non - condensing turbines used
velocity compounding
air leak tolerated in condenser up to...
types of refrigerant evaporators
38. Use of a rotary lobe air blower
inlet air unloader advantages
cross compound turbine
turbocharge
supercharge
39. Pressure drops across the moving blades
gas turbine blades should be replaced every
combined cycle cogeneration
distinguishing reaction turbine
refrigeration safety controls
40. Wrist pins that connect pistons to rod - retained bu circlips
double- flow in reaction turbines
mechanical governors
gudgeon pins
dry low NOx combustion systems
41. 1. written 2. spoken 3. visual
plant thermal effificienies
inlet cooling methods - evaporative
3 types of communication
diesel engines aka
42. 1. better than gantt chart 2. establishes feasible sequence 3. timetable 4. spare time plotted 5. critical activities 6. use of arrow diagrams 7. event (aka nodes) - a situation that occurs after a completed activity 8. schedule manpower efficiently
critical path method (CPM)
rotary compressor control
'turbine'
pressure- velocity compounding
43. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter
steam expanding through stationary nozzles
BOD (biological oxygen demand)
types of turbines
aero- derivative turbines
44. As prime movers in pulp and paper industry
inlet modulating valve advantages
non - condensing turbines used
methods to detect cooling water leaks
solid injection designs
45. Direct prosses applications - absorption refrigeration - heat recovery boiler
close cycle
secondary cogeneration output
cogeneration application areas
2 major factos affecting gas turbine efficiency and power
46. 1. activated sludge and primary sludge combined 2. heated to 37C 3. sits for 25 days 4. anaerobic bacteria breaks down organic contents 5. produces useable gases for waste heat
anaerobic digesters
newton's 3rd law of motion
gas turbine efficiencies based on...
Prevent thermal stresses
47. Air flow is horizontal
pressure compounding
mechanical drive turbine
crossflow
open cycle
48. Small clearances between discs on shaft to...
'turbine'
anaerobic digesters
Prevent thermal stresses
Pressure below atmospheric
49. 1. can - annular 2. annular 3. single- can
jet condensers
3 types of gas turbine combustors
solid injection designs
duct burners in HRSG
50. Controlled pressure from intermediate stages of turbine
extraction governor
water/oil separator
2 major factos affecting gas turbine efficiency and power
hairpin hx