Fuels and Combustion Washing of coal Reduces its sulphur and ash content All of these Improves its coking properties Controls its ash fusibility and increases its calorific value Reduces its sulphur and ash content All of these Improves its coking properties Controls its ash fusibility and increases its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel combustion is never cent per cent efficient due to All of these Incomplete combustion Moisture loss Dry gas/stack gas loss All of these Incomplete combustion Moisture loss Dry gas/stack gas loss ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? Ash disposal problem Erosion of induced draft fan blades Excessive fly-ash discharge from the stack High power consumption in its transportation Ash disposal problem Erosion of induced draft fan blades Excessive fly-ash discharge from the stack High power consumption in its transportation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Out of the following, which is the most important parameter for the blast furnace grade coke? Volatile matter content Moisture content Ash content CSR & CRI Volatile matter content Moisture content Ash content CSR & CRI ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Producer gas containing least amount of tar is produced by the High pressure gasification of coal (e.g. in Lurgi gasifier) Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) Partial combustion of coal Partial combustion of large size (< 50 mm) coke High pressure gasification of coal (e.g. in Lurgi gasifier) Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) Partial combustion of coal Partial combustion of large size (< 50 mm) coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As time passes, the calorific value of stored coal Decreases May increase or decrease (depends on the method of storage) Remains unaltered Increases Decreases May increase or decrease (depends on the method of storage) Remains unaltered Increases ANSWER DOWNLOAD EXAMIANS APP
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