Steam Boilers, Engines, Nozzles and Turbines A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit. Stop valve Fusible plug Blow off cock Safety valve Stop valve Fusible plug Blow off cock Safety valve ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure) p₁ + p₂ p₂/p₁ p₁/p₂ p₁. p₂ p₁ + p₂ p₂/p₁ p₁/p₂ p₁. p₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Stage efficiency is also known as Gross efficiency Nozzle efficiency None of these Diagram efficiency Gross efficiency Nozzle efficiency None of these Diagram efficiency 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 Which of the following is steam dial? Pulverized coal Non-coking bituminous coal Coking bituminous coal Brown coal Pulverized coal Non-coking bituminous coal Coking bituminous coal Brown coal ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ultimate analysis of fuel lists Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS