Test
3.8 Boiler Control systems
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Preguntas del test (9)
1A rapid increase in boiler load causes an immediate increase in steam flow from the boiler, which creates a sudden ____ in the boiler steam drum pressure
- Adrop
- Bincrease
- Cchange
- Dtemperature
2In a fuel flow - airflow combustion control system, the fuel flow signal makes the final adjustment to the ________
- Afeedwater
- Bfuel
- Cairflow
- Ddrum level
3In a fuel flow - airflow combustion control system, the fuel and airflows are measured directly and are converted to ________ signals by means of square root extractors
- Adigital
- Bparallel
- Cproportional
- Doutput
4By measuring and comparing the steam and the _____, it is possible to obtain efficient combustion in a boiler by maintaining a proper steam to airflow ratio
- Afeedwater
- Bfuel
- Cairflow
- Ddrum level
5With On - Off boiler feed water control, water is supplied ______ to the boiler, either by fully opening or fully closing a valve in the feedwater line.
- Apartially
- Bintermittenly
- Cfully
- Dsteadily
6A sudden increase in load, a decrease in drum pressure, and an immediate increase in heat release is called ________
- Arate
- Bswell
- Cshrinkage
- Dcondensing
7Gas bypass method involves the seperation of the convection section of the boiler into two, or more, ______ gas passes
- Areverse
- Bcrossing
- Cparallel
- Dcounter
8The furnace pressure controller will adjust the boiler ____ dampers to keep the pressure constant at all boiler loads
- Aoutlet
- Binlet
- Cair
- Dburner
9An oxygen analyzer can also be provided to indicate the excess oxygen in the flue gas, assisting the operator to control the excess air and increasing boiler _________
- Aload
- Bfiring
- Ctemperature
- Defficiency
Información
- Descripción
- Test sobre 3.8 Boiler Control systems, creado por TRAVIS CANNING el 27/01/2016.
- Autor
- TRAVIS CANNING
- Idioma
- English
- Visitas
- 29
- Valoración
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