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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. Small clearances between discs on shaft to...
mechanical drive turbine
3 types of gas turbine combustors
Prevent thermal stresses
'topping cycle'
2. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
types of reciprocation compressors
types of refrigerant evaporators
compressor valve types
when impulse turbine pressure drops
3. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature
air leak tolerated in condenser up to...
staging
pressure- velocity compounding
liquid line aka
4. Pressure drops across the moving blades
distinguishing reaction turbine
critical path method (CPM)
axial compressors
balancing pipe
5. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled
salometer
sentinel vales
shaft seals
condenser tube attachment methods
6. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads
condenser tube sheets made of...
isochronous governing
pressure drop across first row of reation turbine
cross compound turbine
7. 1. lubricate sliding surfaces 2. cool bearings
coagulant aids
lube oil system basic functions
communication structure
aerobic
8. 1. high manufacturing costs 2. slow speed changes 3. low efficiencies at low throttle
camshaft is the link between
types of fired heaters
gas turbine disadvantages
mechanical governors
9. Defined as one or more tube bundle - served by two or more fans complete with aux equipment
automatic extraction
bay
bakpressure turbines
anoxic
10. 1. start- stop (sliding vane) 2. load- unload (rotary) 3. modulating inlet 4. mircoprocessor based control
extraction pumps usually are _____ type
rotary compressor control
3 types of communication
mechanical draft
11. Results in a gain in velocity - the moving blades change direction producing force
plant thermal effificienies
pressure drop across first row of reation turbine
3 types of communication
gas turbine operating principles
12. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
supercharge
biological removal of solids
velocity compounding
aftercoolers
13. Countries with small grids or specail grid requirements - has a high efficiency at base loads
close cycle
ISO 9000 certified
dual shaft combined cycle cogeneration
3 types of gas turbine combustors
14. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily
refrigeration system charging
suction line unloading valve advantages
R-22
impulse buckets
15. 1. brass 2. copper 3. cupronickel
heat exchanger materials
special aspects of reaction turbine
pressure compounding
closed cycle advantages
16. Simple generator - light - no battery - hotter spark at higher speeds
reaction turbines use ____ bearings
reduce cavitation in extraction pumps
legal requirements of record keeping
magneto ignition
17. 1. electricial purity 2. silver nitrate - milky white
Above or at atmospheric pressure
pressure- velocity compounding
axial air compressors
methods to detect cooling water leaks
18. Up to 60-90%
cogeneration reduces energy costs by...
single point fuel injection
Ammonia R-717
lube oil system basic functions
19. Either fixed production or varying
thermal load control
impulse buckets
gantt chart
combined cycle cogeneration
20. Change in momentum
21. Air flow is upward
axial compressors
baffle pitch
counterflow
sprial valve
22. Fall under provincal boiler pressure regualtions - wcb and local fire marshall regulation and insurance company - need log book - safety device testing records
single point fuel injection
legal requirements of record keeping
gas turbine operating principles
turbocharge
23. Change in direction causing a turbine to move
compressor valve types
impulse force
salometer
purpose of dry receiver
24. 1. planning 2. implementation 3. review
salometer
project management
critical path method (CPM)
dual shaft combined cycle cogeneration
25. Primary fuel produces high thermal energy for processes - the waste heat is used to produce electrical energy
26. 1. verticle cyclinder 2. cabin heater 3. central tube wall
starters transmit power to front end of gas turbnine by...
mechanical overspeed trip
nozzels made of...
types of fired heaters
27. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
'turbine'
air dryer types
types of refrigerant evaporators
cogeneration application areas
28. Does not contain dissolved oxygen
creep
avoid surging
anaerobic
mechanical drive turbine
29. Moving blades on a rotor
gantt chart
impulse buckets
regulation compressor systems
rotary compressor control
30. 1. compressor discharge 2. condenser 3. liquid receiver
types of reboilers
inlet cooling methods - evaporative
creep
ammonia compression cycle high side components
31. Increase pressure affecting performance of condenser but do not incresase temperature
distinguishing reaction turbine
starters transmit power to front end of gas turbnine by...
air leaks in condensers
mirco cogeneration advantages
32. Use teflon or carbon to lubricate system
gas turbine disadvantages
3 speed sensitive governors
oil free compressors
types of refrigerant evaporators
33. Compression ignititon engines
what large rotors are made of
diesel engines aka
gudgeon pins
baffle pitch
34. Working fluid is compress then preheated in regenerator
types of turbines
coagulant aids
close cycle
mechanical drive turbine
35. 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
typical temperature for outlet on oil coolers
lube oil system basic functions
critical path method (CPM)
selective catalytic reduction (SCR)
36. Eliminates thrust - steam admitted midway along casing
double- flow in reaction turbines
types of reciprocation compressors
newton's 2nd law
gas turbine disadvantages
37. KW at 15C standard at sealevel with 60% RH
gas turbine efficiencies based on...
air ejectors
eutectic solution
isochronous governing
38. Independant of the governor - inductive sensor (magnetic speed pickups)
extraction governor
electronic overspeed trip
feature of impulse turbine
combined cycle cogeneration
39. 1. activated sludge 2. rotating biological contactors 3. trickling filters
biological removal of solids
single shaft combine cycle cogeneration
coagulant aids
saturated air
40. Have advantage of high efficiencies - 10% greater than centrifugal compressors
'gas turbine'
steam expanding through stationary nozzles
axial air compressors
Prevent thermal stresses
41. The change in sped that resutls from an increase in load
impulse force
project management
speed droop
downflow condenser
42. 1. thrust bearings 2. dummy pistions 3. thrust adjusting gear
methods to offset axial thrust
non - condensing turbines used
biological removal of solids
bay
43. 1. compressor section 2. combustor 3. turbine section
gas turbine components
air dryers
non - condensing turbines used
centrifugal air compressors advantages
44. 1. contact - 'jet' 2. surface
condenser types
counterflow
rotary compressor types
refrigerant groups
45. Polymers (polyelectrolytes)
coagulant aids
types of refrigerant evaporators
gas turbine disadvantages
non - condensing turbines used
46. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87
two stage refrigeration system
to reduce steam and blade velocities
thrust adjsusting gear
R-22
47. At high temperatures a material stretches
creep
crosshead
Above or at atmospheric pressure
R-134a
48. zeolite molecular sieve desiccant
difference between diesel and gas engines
air dryers
refrigerant groups
salometer
49. On the exhaust side - drives the blower - being connected to the same shaft - increases power by 50-70% as more air is forced into the engine
hx principles
turbocharge
hunting
crosshead
50. 'huff and puff' methods