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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. Overall master plan - comprehensive program
solid injection designs
typical temperature for outlet on oil coolers
adv of impulse turbine
gantt chart
2. Same principle as a turbine but acting in reverse
axial compressors
peak power
types of reciprocation compressors
mechanical overspeed trip
3. No dissolved oxygen but does contain nitrates
scavenging
a tandem turbine coupled by flexible couplings
methods to offset axial thrust
anoxic
4. DLN - reduce NOx down to 9ppm but have an increased combustion area
crossflow
3 speed sensitive governors
'topping cycle'
dry low NOx combustion systems
5. Has steam directed through baffles making 4 passes
pressure sensitve governors
purpose of a wet receiver
anoxic
downflow condenser
6. 1. Split 2. double
biological removal of solids
bank
aero- derivative turbines
turbine casings
7. Pressure does not drop across the moving blades
feature of impulse turbine
hx principles
refrigerant groups
3 speed sensitive governors
8. Equal and opposite reation
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9. A group of one or more bays - including one or more units arranged in a single or continuous structure
biological removal of solids
bank
solid injection designs
double pipe hx
10. Removal of exhaust gases by blow air through
turbocharge
sprial valve
scavenging
bakpressure turbines
11. Controlled pressure from intermediate stages of turbine
methods to detect cooling water leaks
tangs
primary cogeneration output
extraction governor
12. 1. Nozzle - impulse turbine only 2. throttle - reaction turbine only 3. bypass or overload - used on both turbines
3 speed sensitive governors
difference between diesel and gas engines
higher compression ratios needed at...
anaerobic
13. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87
automatic extraction
'turbine'
bakpressure turbines
R-22
14. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy
anoxic
First stage of gas turbine nozzles made of...
pressure drop across first row of reation turbine
turbocharge
15. Grit chambers and screens for waster water system
impulse turbine disadvantage
typical temperature for outlet on oil coolers
hairpin hx
headworks
16. Polymers (polyelectrolytes)
sodium chloride
adv of impulse turbine
coagulant aids
scavenging
17. 75 -000 to 100 -00 hours of operation
reaction blading
pressure compounding
gas turbine blades should be replaced every
coagulant aids
18. Air flow is horizontal
crossflow
thermal load control
compressor valve types
types of gas turbines
19. 1. compression ration across compressor 2. turbine inlet temperature
balancing pipe
Pressure below atmospheric
non - condensing turbines used
2 major factos affecting gas turbine efficiency and power
20. Results in pressure drop and increased velocity
steam expanding through stationary nozzles
mechanical draft
automatic extraction
gas turbine components
21. 0.577 times the inlet pressure
reaction turbines use ____ bearings
newton's 3rd law of motion
critical pressure
two stage refrigeration system
22. HFC group - zero ozone depletion - nonflammable and nonexplosive - boiling point of -26.2 - miscibility problem with minerial oil - use sythetics ester based
bank
inlet modulating valve advantages
R-134a
impulse force
23. Waste heat only
air dryer types
open cycle
unfired
non - condensables
24. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs
disc rotors
aero- derivative turbines
what large rotors are made of
close cycle disadvantages
25. 1. Responsive to speed changes 2. responsive to pressurre changes
govrenors classes
impulse buckets
air dryer types
droop
26. Center- to- center distance between baffles
dry low NOx combustion systems
combined cycle cogeneration
baffle pitch
methods to detect cooling water leaks
27. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration
2 major factos affecting gas turbine efficiency and power
fluid/air cooler
air dryer types
Axial thrust
28. Air flow is upward
counterflow
jet condensers
R-22
mechanical overspeed trip
29. Moving blades on a rotor
scavenging
impulse buckets
air leak tolerated in condenser up to...
mechanical governors
30. Compression ignititon engines
diesel engines aka
condenser safety devices
non - condensing turbines used
inlet modulating valve advantages
31. 5mm in diameter
air leak tolerated in condenser up to...
surging
double- flow in reaction turbines
Above or at atmospheric pressure
32. Monel metal - high tensile strength - nickel copper alloy
nozzels made of...
impulse buckets
turbocharge
dry low NOx combustion systems
33. Contains dissolved oxygen
aerobic
air leaks in condensers
inlet air unloader advantages
reduce cavitation in extraction pumps
34. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed
purpose of a wet receiver
mechanical overspeed trip
gas turbine blades should be replaced every
ejector condenser
35. Countries with small grids or specail grid requirements - has a high efficiency at base loads
Axial thrust
Pressure below atmospheric
unit
dual shaft combined cycle cogeneration
36. 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
base load
3 types of communication
biological removal of solids
critical path method (CPM)
37. Discharge steam when excessive backpressure exists
sentinel vales
single point fuel injection
hx principles
surging
38. 1. widely used 2. single stage 3. impulse turbine
methods to detect cooling water leaks
convergent nozzles
mechanical drive turbine
gas turbine disadvantages
39. 1. written 2. spoken 3. visual
R-22
3 types of communication
'topping cycle'
hunting
40. To remove and properly dispose of pollutants
waste water treatment purpose
double- flow in reaction turbines
crosshead
aerial coolers
41. 'huff and puff' methods
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42. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)
condenser safety devices
unfired
salometer
adv of impulse turbine
43. 1. control range of 0 to 100% load 2. energy efficient
inlet modulating valve advantages
oil system components
centrifugal air compressor disadvantages
open cycle
44. Use antifriction bearings
automatic extraction
reaction blading
aero- derivative turbines
types of reboilers
45. A thrust block that enables the axial position of the rotor to be controlled
dual shaft combined cycle cogeneration
thrust adjsusting gear
duct burners in HRSG
purpose of a wet receiver
46. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)
rotary compressor types
moisture separator
condenser safety devices
inlet cooling methods - evaporative
47. Results in a gain in velocity - the moving blades change direction producing force
baffle pitch
methods to offset axial thrust
duct burners in HRSG
pressure drop across first row of reation turbine
48. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure
legal requirements of record keeping
dynamic compressor control
types of turbines
newton's 3rd law of motion
49. Made of polyethylene - skimming from the surface
capacity
dummy pistons
gas turbine operating principles
water/oil separator
50. Fuel supplied firstg produces electrcial power with thermal energy as a by- product
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