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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. Cause high discharge pressures - more power requirements - reduces capacity
non - condensables
Axial thrust
3 types of gas turbine combustors
mechanical drive turbine
2. 1. high power to weight ration 2. use of different liquids and gaseous fuels 3. start rapidly 4. simple and compact design 5. reliable 6. remote operation
anaerobic
counterflow
sodium chloride
gas turbine advantages
3. 1. inlet vane 2. electro- pneumatic control 3. microprocessor based control
compression ratio
dynamic compressor control
downflow condenser
double- flow in reaction turbines
4. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature
anoxic
staging
anaerobic
3 types of communication
5. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring
expansion valve
reaction turbine components
condenser tube attachment methods
closed cycle advantages
6. 1. Responsive to speed changes 2. responsive to pressurre changes
centrifugal air compressors advantages
methods to detect cooling water leaks
aftercoolers
govrenors classes
7. Forced or induced draft
double flow turbines
aero- derivative turbines
bakpressure turbines
mechanical draft
8. Reduces steam pressure and velocity in two or more steps
'turbine'
Pressure below atmospheric
pressure- velocity compounding
hx principles
9. 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
counterflow
critical path method (CPM)
anaerobic
Pressure below atmospheric
10. Made of steel - used for double acting pistons - acts as a piston rod
steam expanding through stationary nozzles
aero- derivative turbines
thermocouple locations in fired heaters
crosshead
11. King valve
2 major factos affecting gas turbine efficiency and power
shaft seals
liquid line aka
gantt chart
12. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants
primary cogeneration output
BOD (biological oxygen demand)
project management
cogeneration application areas
13. Seperately forged discs or wheels and shrunk onto shaft
anoxic
disc rotors
'bottoming cycle'
non - condensables
14. 1. individual pump system 2. distributor system 3. common rail system
gas turbine efficiencies based on...
solid injection designs
surging
refrigerant evaporator
15. Change in direction causing a turbine to move
types of fired heaters
reaction blading
pressure- velocity compounding
impulse force
16. 1. spray 2. fog 3. special evaporator pads
inlet cooling methods - evaporative
trunk type piston
largest hx in a plant is...
thrust adjsusting gear
17. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting
suction line unloading valve advantages
environmental management program
crosshead
Prevent thermal stresses
18. 1. control range of 0 to 100% load 2. energy efficient
pressure sensitve governors
inlet modulating valve advantages
solid injection designs
ammonia compression cycle low side
19. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations
types of reboilers
mirco cogeneration advantages
purpose of compressor lubrication
adv of impulse turbine
20. Sagging and hogging - 20-40rpm
2 stroke internal combustion
centrifugal air compressor disadvantages
barring gears prevent
thrust adjsusting gear
21. Monel metal - high tensile strength - nickel copper alloy
inlet cooling methods - evaporative
nozzels made of...
R-134a
combined cycle cogeneration
22. 1. lubricate sliding surfaces 2. cool bearings
lube oil system basic functions
cogeneration reduces energy costs by...
barring gears prevent
condenser tube sheets made of...
23. Made of cast iron and support by stay bolts to protect against a vacuum
electronic overspeed trip
refrigeration safety controls
baffle pitch
water boxes
24. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
intercoolers
velocity compounding
ammonia compression cycle low side
impulse buckets
25. 1. can - annular 2. annular 3. single- can
3 types of gas turbine combustors
Ammonia R-717
refrigerant evaporator
thrust adjsusting gear
26. Driving rotating equipment
primary cogeneration output
nozzles types
reaction turbine components
crossflow
27. The space wherein the liquid refrigerant absorbs heat and boils
secondary cogeneration output
isochronous governing
components of PM program
refrigerant evaporator
28. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads
pressure sensitve governors
isochronous governing
supercharge
refrigeration safety controls
29. Independant of the governor - inductive sensor (magnetic speed pickups)
saturated air
electronic overspeed trip
refrigerant groups
methods to detect cooling water leaks
30. Primary fuel produces high thermal energy for processes - the waste heat is used to produce electrical energy
31. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
inlet cooling methods - evaporative
mechanical overspeed trip
primary cogeneration output
gas turbine blades should be replaced every
32. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet
condenser types
thermocouple locations in fired heaters
3 speed sensitive governors
impulse buckets
33. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles
plant thermal effificienies
dual shaft combined cycle cogeneration
air ejectors
tangs
34. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices
intercoolers
a tandem turbine coupled by flexible couplings
nozzles types
oil system components
35. Radiator type
intercoolers
methods to detect cooling water leaks
fluid/air cooler
aerobic
36. The crankshaft and valve train
liquid line aka
newton's 3rd law of motion
camshaft is the link between
environmental management program
37. 1. kettle 2. thermosyphon horizontal 3. thermosyphon vertical
air leaks in condensers
types of reboilers
cross compound turbine
special aspects of reaction turbine
38. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled
air ejectors
pressure compounding
government regualtions for waste water
condenser tube attachment methods
39. A verticle well is used to increase the NPSH - gives better performance and less cavitation
govrenors classes
velocity compounding
reduce cavitation in extraction pumps
impulse turbine disadvantage
40. Simple generator - light - no battery - hotter spark at higher speeds
R-12
jacking oil system
pressure drop across first row of reation turbine
magneto ignition
41. To remove and properly dispose of pollutants
single shaft combine cycle cogeneration
purpose of dry receiver
surging
waste water treatment purpose
42. 1. verticle cyclinder 2. cabin heater 3. central tube wall
types of fired heaters
air cooling advantages over water cooling
crosshead
mechanical governors
43. One or more tube bundles - in one or more bays for an individual service or process
unit
hunting
primary cogeneration output
crosshead
44. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)
isochronous governing
types of reboilers
surging
rotary compressor types
45. Hydraulic cylinder or pisston on a governor
types of gas turbines
reduce cavitation in extraction pumps
duct burners in HRSG
servo motor
46. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter
BOD (biological oxygen demand)
automatic extraction
inlet cooling methods - evaporative
types of reboilers
47. Steam expands and pressure drops as it passes through moving blades - unbalance pressure
reaction blading
aerial coolers
reaction turbine
baffle pitch
48. 1. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing
electronic overspeed trip
dynamic compressor control
purpose of compressor lubrication
scavenging
49. Most widely used - least amount of steam
newton's 2nd law
compressor valve types
single flow turbines
gantt chart
50. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs
communication structure
close cycle disadvantages
jet condensers
bakpressure turbines