Steam Boilers, Engines, Nozzles and Turbines Fire tube boilers are Internally as well as externally fired None of these Internally fired Externally fired Internally as well as externally fired None of these Internally fired Externally fired ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the useful heat drop to the isentropic heat drop is called Boiler efficiency Condenser efficiency Vacuum efficiency Nozzle efficiency Boiler efficiency Condenser efficiency Vacuum efficiency Nozzle efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which is not the correct statement about moisture in coal? It increases thermal efficiency In some coals moisture may be present up to 40% Inherent moisture and surface moisture are different things Some moisture in coal helps in better burning which is not possible with completely dry coal It increases thermal efficiency In some coals moisture may be present up to 40% Inherent moisture and surface moisture are different things Some moisture in coal helps in better burning which is not possible with completely dry coal ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be None of these Under-damping Choked Over-damping None of these Under-damping Choked Over-damping ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure. None of these Equal to Higher than Less than None of these Equal to Higher than Less than ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will Remain unaffected Improve May improve/worsen depending on size Worsen Remain unaffected Improve May improve/worsen depending on size Worsen ANSWER DOWNLOAD EXAMIANS APP
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