Steam Boilers, Engines, Nozzles & Turbines Mcqs

Q.  Which is not the correct statement about moisture in coal ______________________?

a. inherent moisture and surface mois¬ture are different things
b. in some coals moisture may be present upto 40%
c. some moisture in coal helps in better burning which is not possible with completely dry coal
d. it increases thermal efficiency
e. moisture in coal is removed before firing by heating it with hot air


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