The radius of a dished head is taken approximately as?
one
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two
half
one-fourth
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In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine?
In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine?
locomotive boiler
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Lancashire boiler
Babcock and Wilcox boiler
Cochran boiler
With increase in load, convection superheater has?
With increase in load, convection superheater has?
rising characteristic
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flat characteristic
linear characterisstic
drooping characteristic
Vacuum for reciprocating steam engines compared to steam turbines is?
Vacuum for reciprocating steam engines compared to steam turbines is?
less
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could be more or less depending on the size of plant
equal
more
In locomotives, the draught is produced by?
In locomotives, the draught is produced by?
steam jet draught
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chimney
induced draft fan
None of the Option is Correct
Which device is used in thermal power plants to reduce level of pollution?
Which device is used in thermal power plants to reduce level of pollution?
precipitator
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chimney
smoke meter
induced draft fan
Ultimate analysis of fuel is determination of percentage of?
Ultimate analysis of fuel is determination of percentage of?
carbon, hydrogen, nitrogen, sulphur, moisture
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fixed carbon, ash, volatile matter, moisture
higher calorific value
lower calorific value
An economiser in a boiler?
An economiser in a boiler?
decreases fuel consumption
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decreases steam pressure
increases steam flow
increases steam pressure
Sulphur content of fuels is very important to the plant operators because it?
Sulphur content of fuels is very important to the plant operators because it?
has highly corrosive effect
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promotes complete combustion
retards electric precipitation
has high heating value
Gusset stays in a boiler are provided to____________________?
Gusset stays in a boiler are provided to____________________?
prevent the bulging of flat surfaces
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avoid explosion in furnace
prevent leakage of hot flue gases
support furnace freely from top