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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. Help maintain definite thrust toward exhaust
lube oil system basic functions
air leak tolerated in condenser up to...
balancing pipe
oil system components
2. 1. high pressure cutout 2. oil pressure cutout 3. pressure relief devices
air ejectors
anaerobic
refrigeration safety controls
oil system components
3. Sagging and hogging - 20-40rpm
compressor valve types
dry low NOx combustion systems
barring gears prevent
inlet cooling methods - evaporative
4. zeolite molecular sieve desiccant
air dryers
dry low NOx combustion systems
Ammonia R-717
critical pressure
5. Results in pressure drop and increased velocity
'bottoming cycle'
steam expanding through stationary nozzles
3 types of gas turbine combustors
starters transmit power to front end of gas turbnine by...
6. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates
sprial valve
types of refrigerant evaporators
surging
nozzels made of...
7. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled
condenser tube attachment methods
adv of impulse turbine
heat exchanger materials
purpose of dry receiver
8. Small pressure drop
convergent nozzles
gas turbine components
waste water treatment plant components
'bottoming cycle'
9. Contains 0.5kg of moisture for every 28 cubic meter of air
R-134a
saturated air
typical temperature for outlet on oil coolers
air cooling advantages over water cooling
10. Change in direction causing a turbine to move
impulse force
single flow turbines
barring gears prevent
gas turbine disadvantages
11. Means to come together and form one mass - removes oil and water from air
gas turbine advantages
coalescing filters
ejector condenser
surging
12. Used for single acting compressors
Ammonia R-717
disc rotors
types of turbines
trunk type piston
13. At high temperatures a material stretches
natural draft cooling tower
creep
air dryer types
R-22
14. KW at 15C standard at sealevel with 60% RH
duct burners in HRSG
combined cycle cogeneration
gas turbine efficiencies based on...
trunk type piston
15. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily
primary cogeneration output
types of turbines
unit
suction line unloading valve advantages
16. 1. Flyweights 2. coutner spring 3. function based on centrifugal force
mechanical governors
aerobic
anoxic
reaction turbine
17. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work
suction line unloading valve advantages
a tandem turbine coupled by flexible couplings
surface condenser
4 stroke internal combustion
18. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8
R-12
R-22
refrigeration system charging
Piezometer wells
19. Wrist pins that connect pistons to rod - retained bu circlips
speed droop
gudgeon pins
pressure- velocity compounding
gas turbine efficiencies based on...
20. Made of polyethylene - skimming from the surface
air ejectors
supercharge
types of turbines
water/oil separator
21. Polymers (polyelectrolytes)
methods to offset axial thrust
purpose of dry receiver
coagulant aids
servo motor
22. Refers only to specificly to the turbine section
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23. Pressure drops across the moving blades
distinguishing reaction turbine
expansion valve
condenser tube sheets made of...
rotary compressor control
24. 1. activated sludge 2. rotating biological contactors 3. trickling filters
droop
water/oil separator
thrust adjsusting gear
biological removal of solids
25. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure
double pipe hx
types of turbines
cogeneration
refrigeration safety controls
26. 1. Aero- derivate 2. Heavy duty
gudgeon pins
pressure- velocity compounding
two stage refrigeration system
types of gas turbines
27. Too small to settle out - add floc
angstrom particles
droop
aerial coolers
reduce cavitation in extraction pumps
28. The utilization of one form of input energy to generate two or more forms of output energy
cogeneration
coagulant aids
cross compound turbine
distinguishing reaction turbine
29. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87
mirco cogeneration advantages
tangs
mechanical governors
R-22
30. Very high speed with extremely high centrigufal force and high frictional losses
axial compressors
biological removal of solids
impulse turbine disadvantage
reduce cavitation in extraction pumps
31. Defined as one or more tube bundle - served by two or more fans complete with aux equipment
difference between diesel and gas engines
anaerobic
oil free compressors
bay
32. Removal of exhaust gases by blow air through
oil system components
gantt chart
sealing strips made of...
scavenging
33. Grit chambers and screens for waster water system
open cycle
R-22
headworks
3 types of communication
34. 1. use clean burning fuels 2. less fuel being used - saving energy reserves 3. electrical production onsite lowers construction demands for new sites and reduces transmission line power losses
scavenging
3 types of communication
marco cogeneration advantages
higher compression ratios needed at...
35. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity
methods to detect cooling water leaks
purpose of a wet receiver
First stage of gas turbine nozzles made of...
refrigeration safety controls
36. 1. spray 2. fog 3. special evaporator pads
inlet cooling methods - evaporative
R-22
3 types of gas turbine combustors
secondary cogeneration output
37. Change in momentum
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38. 1. internal 2. external 3. equipment vendors 4. chemical suppliers 5. office equipement vendors
Ammonia R-717
legal requirements of record keeping
compressor displacement
communication structure
39. 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
salometer
balancing pipe
aftercoolers
anaerobic digesters
40. A group of one or more bays - including one or more units arranged in a single or continuous structure
bank
'bottoming cycle'
gas turbine disadvantages
centrifugal air compressor disadvantages
41. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost
steam expanding through stationary nozzles
single shaft combine cycle cogeneration
waste water treatment purpose
pressure compounding
42. 75 -000 to 100 -00 hours of operation
water boxes
impulse force
gas turbine blades should be replaced every
downflow condenser
43. A thrust block that enables the axial position of the rotor to be controlled
BOD (biological oxygen demand)
liquid line aka
thrust adjsusting gear
components of PM program
44. Rows of stationart baldes with alternating rows of moving blades
double flow turbines
government regualtions for waste water
sodium chloride
reaction turbine components
45. Direct contact type - uses converging nozzles and in moderate vacuum
double flow turbines
ejector condenser
refrigeration safety controls
liquid line aka
46. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
cogeneration application areas
headworks
distinguishing reaction turbine
suction line unloading valve advantages
47. 1. lubricate sliding surfaces 2. cool bearings
Prevent thermal stresses
government regualtions for waste water
lube oil system basic functions
when impulse turbine pressure drops
48. Forced or induced draft
speed droop
air leak tolerated in condenser up to...
cross compound turbine
mechanical draft
49. Air flow is horizontal
pressure sensitve governors
R-134a
crossflow
turbocharge
50. Higher power and speeds
higher compression ratios needed at...
air leaks in condensers
air leak tolerated in condenser up to...
double flow turbines