Steam Boilers, Engines, Nozzles and Turbines The ratio of brake power to the indicated power is known as Mechanical efficiency Overall efficiency Brake thermal efficiency Indicated thermal efficiency Mechanical efficiency Overall efficiency Brake thermal efficiency Indicated thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the volume at cut-off to the swept volume is called Cut-off ratio Expansion ratio Clearance ratio None of these Cut-off ratio Expansion ratio Clearance ratio None of these 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
Steam Boilers, Engines, Nozzles and Turbines Duplex feed pumps are used in small steam boilers. These operate on the principle of Centrifugal pump Axial flow pump Reciprocating pump Gear pump Centrifugal pump Axial flow pump Reciprocating pump Gear pump ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An air preheater is installed None of these Between the economiser and chimney Before the superheater Before the economiser None of these Between the economiser and chimney Before the superheater Before the economiser ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Incomplete combustion can be best judged by Smoky chimney exit Measuring temperature of flue gases at exit of furnace Excess air in flue gases Measuring carbon monoxide in flue gases Smoky chimney exit Measuring temperature of flue gases at exit of furnace Excess air in flue gases Measuring carbon monoxide in flue gases ANSWER DOWNLOAD EXAMIANS APP
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