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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. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads
coalescing filters
isochronous governing
speed droop
electronic overspeed trip
2. Pressure does not drop across the moving blades
'topping cycle'
4 stroke internal combustion
feature of impulse turbine
compressor displacement
3. Cool compressed air before point of use
First stage of gas turbine nozzles made of...
aftercoolers
isochronous governing
secondary cogeneration output
4. 75 -000 to 100 -00 hours of operation
selective catalytic reduction (SCR)
surging
gas turbine blades should be replaced every
impulse buckets
5. Working fluid is compress then preheated in regenerator
close cycle
cogeneration
'bottoming cycle'
selective catalytic reduction (SCR)
6. Large turbines with a generator on each shaft
cross compound turbine
difference between diesel and gas engines
compressor displacement
Above or at atmospheric pressure
7. Results in a gain in velocity - the moving blades change direction producing force
supercharge
pressure drop across first row of reation turbine
rotary compressor control
types of reciprocation compressors
8. Used to open and close the by- pass port in a stator - varies the volum compressed air being produced
pressure- velocity compounding
Pressure below atmospheric
sprial valve
baffle pitch
9. 1. spray 2. fog 3. special evaporator pads
aerial coolers
unit
inlet cooling methods - evaporative
primary cogeneration output
10. KW at 15C standard at sealevel with 60% RH
brine
combined cycle cogeneration
gas turbine efficiencies based on...
reaction turbines use ____ bearings
11. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8
pressure- velocity compounding
typical temperature for outlet on oil coolers
a tandem turbine coupled by flexible couplings
R-12
12. 1. Flyweights 2. coutner spring 3. function based on centrifugal force
mechanical governors
trunk type piston
thermal load control
shaft seals
13. 1. can - annular 2. annular 3. single- can
2 major factos affecting gas turbine efficiency and power
3 types of gas turbine combustors
avoid surging
air leak tolerated in condenser up to...
14. Admirally brass or Munte metal - 25-40mm thick
condenser tube sheets made of...
R-12
staging
shaft seals
15. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily
oil system components
suction line unloading valve advantages
hunting
dummy pistons
16. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers
trunk type piston
difference between diesel and gas engines
air leaks in condensers
disc rotors
17. Chrome- iron alloy
sealing strips made of...
reaction turbine components
sentinel vales
gas turbine blades should be replaced every
18. Has steam directed through baffles making 4 passes
adv of impulse turbine
crosshead
sealing strips made of...
downflow condenser
19. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled
higher compression ratios needed at...
jet condensers
condenser tube attachment methods
sodium chloride
20. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell
jet condensers
biological removal of solids
bay
cogeneration application areas
21. Needs to a high vacuum present in system before charging
refrigeration system charging
intercoolers
a tandem turbine coupled by flexible couplings
3 types of communication
22. 1. Carbon ring 2. labyrinth seal 3. water seal
counterflow
shaft seals
newton's 3rd law of motion
lube oil system basic functions
23. Center- to- center distance between baffles
newton's 3rd law of motion
brine
baffle pitch
saturated air
24. 'huff and puff' methods
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25. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work
crossflow
surface condenser
marco cogeneration advantages
Above or at atmospheric pressure
26. Type of hydrometer indicating % of salt in solution
rotary compressor control
salometer
isochronous governing
types of gas turbines
27. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters
crossflow
types of gas turbines
camshaft is the link between
centrifugal air compressor disadvantages
28. Means to come together and form one mass - removes oil and water from air
coalescing filters
types of turbines
selective catalytic reduction (SCR)
capacity
29. Air flow is upward
peak power
counterflow
newton's 2nd law
inlet air unloader advantages
30. Does not contain dissolved oxygen
compressor valve types
condenser tube attachment methods
convergent nozzles
anaerobic
31. 1. control range of 0 to 100% load 2. energy efficient
convergent nozzles
scavenging
cross compound turbine
inlet modulating valve advantages
32. Throttle body
aftercoolers
surging
'turbine'
single point fuel injection
33. Made of steel - used for double acting pistons - acts as a piston rod
crosshead
types of gas turbines
double- flow in reaction turbines
ejector condenser
34. Controlled pressure from intermediate stages of turbine
extraction governor
'gas turbine'
gas turbine disadvantages
environmental management program
35. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing
reaction turbines use ____ bearings
'turbine'
reaction turbine components
clean turbine blading with
36. Control a steady backpressure - sensing element in exhuast line
close cycle
downflow condenser
pressure sensitve governors
types of turbines
37. Direct prosses applications - absorption refrigeration - heat recovery boiler
methods to offset axial thrust
nozzles types
air take 'pulse cleaing systems'
secondary cogeneration output
38. The condenser
critical pressure
largest hx in a plant is...
compression ratio
compressor displacement
39. 1. Responsive to speed changes 2. responsive to pressurre changes
govrenors classes
aerobic
Above or at atmospheric pressure
impulse force
40. An 'overrunning' clutch
staging
starters transmit power to front end of gas turbnine by...
Pressure below atmospheric
eutectic solution
41. A1 - A2 - A3 - B1 - B2 and B3 A = toxicity not identified under 400ppm B = toxicity identified under 400ppm 1 = not flammable 2 = low flammable limit 3 = highly flammable
refrigerant groups
reduce cavitation in extraction pumps
bank
to reduce steam and blade velocities
42. Dry surface coolers - no contact convection hx - aka finned tube exchangers
closed cycle advantages
avoid surging
aerial coolers
eutectic solution
43. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring
expansion valve
staging
power oil
waste water treatment plant components
44. Sagging and hogging - 20-40rpm
base load
barring gears prevent
3 types of communication
methods to detect cooling water leaks
45. Defined as one or more tube bundle - served by two or more fans complete with aux equipment
bay
types of fired heaters
refrigeration safety controls
steam expanding through stationary nozzles
46. Made of cast iron and support by stay bolts to protect against a vacuum
largest hx in a plant is...
cross compound turbine
water boxes
single flow turbines
47. Refers only to specificly to the turbine section
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48. Eliminates thrust - steam admitted midway along casing
extraction pumps usually are _____ type
double- flow in reaction turbines
creep
crosshead
49. 1. to increase steam production 2. control superheater temperatures 3. meet process demands
critical pressure
expansion valve
cogeneration
duct burners in HRSG
50. Velocity increases as passes through nozzles
3 types of communication
when impulse turbine pressure drops
pressure- velocity compounding
First stage of gas turbine nozzles made of...