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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. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)
rotary compressor types
secondary cogeneration output
gas turbine disadvantages
balancing pipe
2. Type of hydrometer indicating % of salt in solution
saturated air
balancing pipe
shaft seals
salometer
3. Controlled pressure from intermediate stages of turbine
creep
open cycle
reduce cavitation in extraction pumps
extraction governor
4. The volum swept out by the piston - same through all stages
hairpin hx
peak power
gas turbine efficiencies based on...
compressor displacement
5. Grit chambers and screens for waster water system
headworks
critical path method (CPM)
impulse buckets
air dryer types
6. 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
gas turbine disadvantages
critical path method (CPM)
starters transmit power to front end of gas turbnine by...
purpose of a wet receiver
7. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
peak power
jet condensers
R-134a
double pipe hx
8. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy
non - condensing turbines used
components of PM program
First stage of gas turbine nozzles made of...
heat exchanger materials
9. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads
axial air compressors
sentinel vales
convergent- divergent
isochronous governing
10. Made of cast iron and support by stay bolts to protect against a vacuum
air dryers
selective catalytic reduction (SCR)
single flow turbines
water boxes
11. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers
single shaft combine cycle cogeneration
anaerobic digesters
inlet cooling methods - evaporative
difference between diesel and gas engines
12. Attempting to pick up a load - turbines in parallel
hunting
expansion valve
solid injection designs
mechanical governors
13. The difference between the no- load and full- load speed - expressed as a %
govrenors classes
legal requirements of record keeping
droop
solid injection designs
14. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations
thrust adjsusting gear
mirco cogeneration advantages
thermocouple locations in fired heaters
air take 'pulse cleaing systems'
15. Direct contact type - uses converging nozzles and in moderate vacuum
ejector condenser
jet condensers
'bottoming cycle'
steam expanding through stationary nozzles
16. Air drawn from atmosphere - working fluid
aerobic
open cycle
newton's 3rd law of motion
impulse buckets
17. Overall master plan - comprehensive program
gas turbine advantages
gantt chart
components of PM program
3 speed sensitive governors
18. 1. control range of 0 to 100% load 2. energy efficient
two stage refrigeration system
single flow turbines
critical path method (CPM)
inlet modulating valve advantages
19. 1. intake 2. compression 3. power 4. exhaust
single point fuel injection
4 stroke internal combustion
dual shaft combined cycle cogeneration
waste water treatment plant components
20. Higher altitudes
solid injection designs
higher compression ratios needed at...
R-12
adv of impulse turbine
21. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
cogeneration application areas
turbine casings
gas turbine efficiencies based on...
mirco cogeneration advantages
22. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface
pressure- velocity compounding
hairpin hx
lube oil system basic functions
servo motor
23. Used to satisfy process steam requirements
higher compression ratios needed at...
condenser tube sheets made of...
bakpressure turbines
cogeneration reduces energy costs by...
24. 1. compressor discharge 2. condenser 3. liquid receiver
air dryers
critical path method (CPM)
ammonia compression cycle high side components
peak power
25. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87
compressor valve types
refrigerant evaporator
R-22
compression ratio
26. 43-49 degrees C
typical temperature for outlet on oil coolers
Prevent thermal stresses
air cooling advantages over water cooling
oil system components
27. 1. planning 2. implementation 3. review
droop
power oil
project management
higher compression ratios needed at...
28. Center- to- center distance between baffles
hx principles
a tandem turbine coupled by flexible couplings
baffle pitch
biological removal of solids
29. Needs to a high vacuum present in system before charging
refrigeration system charging
'gas turbine'
centrifugal air compressors advantages
pressure compounding
30. Independant of the governor - inductive sensor (magnetic speed pickups)
electronic overspeed trip
coagulant aids
peak power
pressure sensitve governors
31. Each stage seperated by partitions - nozzles set into diaphragms
typical temperature for outlet on oil coolers
pressure compounding
automatic extraction
anaerobic
32. The space wherein the liquid refrigerant absorbs heat and boils
refrigerant evaporator
droop
Pressure below atmospheric
trunk type piston
33. Cannot go below -18
rotary compressor types
pressure- velocity compounding
methods to offset axial thrust
sodium chloride
34. Means to come together and form one mass - removes oil and water from air
types of gas turbines
R-12
sprial valve
coalescing filters
35. 1. verticle cyclinder 2. cabin heater 3. central tube wall
'topping cycle'
condenser safety devices
types of fired heaters
sprial valve
36. 1. Flyweights 2. coutner spring 3. function based on centrifugal force
headworks
peak power
scavenging
mechanical governors
37. Pressure does not drop across the moving blades
feature of impulse turbine
typical temperature for outlet on oil coolers
cogeneration
crossflow
38. 1. start- stop (sliding vane) 2. load- unload (rotary) 3. modulating inlet 4. mircoprocessor based control
rotary compressor control
axial compressors
purpose of compressor lubrication
unit
39. Results in a gain in velocity - the moving blades change direction producing force
air dryers
pressure drop across first row of reation turbine
critical path method (CPM)
dry low NOx combustion systems
40. Pressure drops across the moving blades
liquid line aka
methods to detect cooling water leaks
distinguishing reaction turbine
'turbine'
41. Change in direction causing a turbine to move
air take 'pulse cleaing systems'
unfired
jet condensers
impulse force
42. 1. internal 2. external 3. equipment vendors 4. chemical suppliers 5. office equipement vendors
gas turbine advantages
condenser tube sheets made of...
communication structure
saturated air
43. Contains 0.5kg of moisture for every 28 cubic meter of air
BOD (biological oxygen demand)
Ammonia R-717
saturated air
expansion valve
44. To remove and properly dispose of pollutants
compression ratio
BOD (biological oxygen demand)
barring gears prevent
waste water treatment purpose
45. King valve
liquid line aka
'topping cycle'
unit
electronic overspeed trip
46. 1. lowers power consumption 2. load changes frequently 3. pilot valve controls loading - adjustable
inlet air unloader advantages
mechanical drive turbine
lube oil system basic functions
combined cycle cogeneration
47. 1. activated sludge 2. rotating biological contactors 3. trickling filters
biological removal of solids
close cycle
inlet cooling methods - evaporative
axial air compressors
48. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)
types of refrigerant evaporators
refrigerant groups
condenser safety devices
air leaks in condensers
49. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function
2 major factos affecting gas turbine efficiency and power
R-134a
non - condensing turbines used
intercoolers
50. 75 -000 to 100 -00 hours of operation
gas turbine blades should be replaced every
govrenors classes
R-134a
2 major factos affecting gas turbine efficiency and power