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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. drum rotors on reaction turbines eliminates...
Axial thrust
gas turbine components
coagulant aids
to reduce steam and blade velocities
2. Large turbines couple together on a single shaft applied to one generator
inlet cooling methods - evaporative
reaction turbine components
tandem compound turbines
cogeneration application areas
3. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
refrigeration system charging
jet condensers
govrenors classes
ISO 9000 certified
4. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet
scavenging
mechanical overspeed trip
thermocouple locations in fired heaters
pressure compounding
5. 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
marco cogeneration advantages
condenser tube sheets made of...
reduce cavitation in extraction pumps
2 stroke internal combustion
6. Recuperative category - high pressure
types of turbines
double pipe hx
purpose of dry receiver
rotary compressor control
7. 0.577 times the inlet pressure
impulse buckets
critical pressure
project management
waste water treatment plant components
8. 1. Flyweights 2. coutner spring 3. function based on centrifugal force
'topping cycle'
disc rotors
mechanical governors
intercoolers
9. Compression ignititon engines
aerial coolers
liquid line aka
diesel engines aka
saturated air
10. Is the ratio of the discharge pressure to the intake pressure absolute
cogeneration reduces energy costs by...
compression ratio
gas turbine components
types of fired heaters
11. Independant of the governor - inductive sensor (magnetic speed pickups)
communication structure
lube oil system basic functions
largest hx in a plant is...
electronic overspeed trip
12. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust
R-12
special aspects of reaction turbine
baffle pitch
steam expanding through stationary nozzles
13. Made of cast iron and support by stay bolts to protect against a vacuum
avoid surging
water boxes
reaction turbine components
combined cycle cogeneration
14. A verticle well is used to increase the NPSH - gives better performance and less cavitation
impulse turbine disadvantage
reduce cavitation in extraction pumps
pressure sensitve governors
condenser safety devices
15. 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
liquid line aka
Pressure below atmospheric
gas turbine advantages
reaction blading
16. Centrifugal pumps
extraction pumps usually are _____ type
communication structure
reaction turbine components
servo motor
17. Calcium chloride and water - -51
hairpin hx
brine
air leak tolerated in condenser up to...
gas turbine blades should be replaced every
18. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8
hairpin hx
R-22
supercharge
R-12
19. Refers to the production of electricity form two sources utilizing one fuel source
air cooling advantages over water cooling
R-22
combined cycle cogeneration
refrigeration safety controls
20. 1. to increase steam production 2. control superheater temperatures 3. meet process demands
duct burners in HRSG
plant thermal effificienies
brine
salometer
21. Cool compressed air before point of use
aftercoolers
hx principles
impulse buckets
'gas turbine'
22. Chrome- iron alloy
reaction turbines use ____ bearings
sealing strips made of...
coalescing filters
close cycle
23. Driving rotating equipment
primary cogeneration output
compression ratio
gas turbine disadvantages
tandem compound turbines
24. 1. CCME 2. CEQG 3. CWQG 4. US EPA
biological removal of solids
counterflow
unfired
government regualtions for waste water
25. Eliminates thrust - steam admitted midway along casing
water boxes
'turbine'
double- flow in reaction turbines
fluid/air cooler
26. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades
two stage refrigeration system
velocity compounding
selective catalytic reduction (SCR)
impulse force
27. Overall master plan - comprehensive program
gantt chart
critical pressure
coalescing filters
air take 'pulse cleaing systems'
28. 1. electricial purity 2. silver nitrate - milky white
legal requirements of record keeping
methods to detect cooling water leaks
bakpressure turbines
surging
29. Used to open and close the by- pass port in a stator - varies the volum compressed air being produced
mechanical governors
newton's 2nd law
barring gears prevent
sprial valve
30. The condenser
largest hx in a plant is...
open cycle
aftercoolers
pressure sensitve governors
31. 1. collection system 2. seperation pond 3. flare pit 4. stabilization lagoon 5. wastewater heater 6. 1st stage aeration tank - activated sludge 7. 2nd stage aeration tank 8. clarifiers 9. polishing pond
waste water treatment plant components
velocity compounding
gudgeon pins
creep
32. 1. start- stop (sliding vane) 2. load- unload (rotary) 3. modulating inlet 4. mircoprocessor based control
extraction governor
mechanical draft
double flow turbines
rotary compressor control
33. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature
ammonia compression cycle low side
thermocouple locations in fired heaters
impulse force
staging
34. 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
gas turbine operating principles
inlet modulating valve advantages
R-134a
components of PM program
35. 1. high manufacturing costs 2. slow speed changes 3. low efficiencies at low throttle
typical temperature for outlet on oil coolers
saturated air
thrust adjsusting gear
gas turbine disadvantages
36. 1. high pressure cutout 2. oil pressure cutout 3. pressure relief devices
BOD (biological oxygen demand)
types of gas turbines
peak power
refrigeration safety controls
37. Direct contact type - uses converging nozzles and in moderate vacuum
ejector condenser
cogeneration
higher compression ratios needed at...
air leak tolerated in condenser up to...
38. Moisture removed by centrifugal force
expansion valve
water boxes
moisture separator
Ammonia R-717
39. Velocity increases as passes through nozzles
when impulse turbine pressure drops
adv of impulse turbine
salometer
turbine casings
40. Center- to- center distance between baffles
bakpressure turbines
inlet air unloader advantages
sentinel vales
baffle pitch
41. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters
primary cogeneration output
centrifugal air compressor disadvantages
Above or at atmospheric pressure
dynamic compressor control
42. 1. Responsive to speed changes 2. responsive to pressurre changes
govrenors classes
3 speed sensitive governors
condenser safety devices
newton's 3rd law of motion
43. 1. simple design 2. less piping 3. no freezing hazard
air cooling advantages over water cooling
baffle pitch
close cycle
refrigerant groups
44. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations
gas turbine advantages
types of turbines
fluid/air cooler
mirco cogeneration advantages
45. 1. compression ration across compressor 2. turbine inlet temperature
air ejectors
special aspects of reaction turbine
headworks
2 major factos affecting gas turbine efficiency and power
46. Equal and opposite reation
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47. 1. Split 2. double
turbocharge
brine
turbine casings
gas turbine components
48. 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
'topping cycle'
anaerobic digesters
ammonia compression cycle low side
thermocouple locations in fired heaters
49. The volum swept out by the piston - same through all stages
air cooling advantages over water cooling
compressor displacement
ammonia compression cycle high side components
purpose of dry receiver
50. 75 -000 to 100 -00 hours of operation
rotary compressor types
inlet air unloader advantages
nozzels made of...
gas turbine blades should be replaced every