Steam Boilers, Engines, Nozzles and Turbines For water, at pressures below atmospheric; Melting point rises markedly and boiling point drops markedly Melting point rises slightly and boiling point drops markedly Melting point drops slightly and boiling point drops markedly Melting point drops slightly and boiling point drops slightly Melting point rises markedly and boiling point drops markedly Melting point rises slightly and boiling point drops markedly Melting point drops slightly and boiling point drops markedly Melting point drops slightly and boiling point drops slightly ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle. None of these Remain same Increases Decreases None of these Remain same Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In recuperative air preheaters, the heat is transferred From a metal wall from one medium to another By direct mixing From heating an intermediate material and then heating the air from this material Heat is transferred by bleeding some gases from furnace From a metal wall from one medium to another By direct mixing From heating an intermediate material and then heating the air from this material Heat is transferred by bleeding some gases from furnace ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The length of Cornish boiler varies from 3 to 5 m 2 to 4.5 m 7 to 9 m 5 to 7.5 m 3 to 5 m 2 to 4.5 m 7 to 9 m 5 to 7.5 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which is not the correct statement about moisture in coal? Some moisture in coal helps in better burning which is not possible with completely dry coal In some coals moisture may be present up to 40% It increases thermal efficiency Inherent moisture and surface moisture are different things Some moisture in coal helps in better burning which is not possible with completely dry coal In some coals moisture may be present up to 40% It increases thermal efficiency Inherent moisture and surface moisture are different things ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value (1 + moisture content) 1 – moisture content (1- moisture content) 1 + moisture content (1 + moisture content) 1 – moisture content (1- moisture content) 1 + moisture content ANSWER DOWNLOAD EXAMIANS APP
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