Steam Boilers, Engines, Nozzles and Turbines A fusible plug is fitted in small boilers in order to Avoid explosion Control steam dome Extinguish fire if water level in the boiler falls below alarming limit Avoid excessive build up of pressure Avoid explosion Control steam dome Extinguish fire if water level in the boiler falls below alarming limit Avoid excessive build up of pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the actual vacuum to the ideal vacuum in a condenser is called Boiler efficiency Vacuum efficiency Nozzle efficiency Condenser efficiency Boiler efficiency Vacuum efficiency Nozzle efficiency Condenser efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the Blade solidity is 0.65 Blades are equiangular and frictionless Blades are equiangular Blade velocity coefficient is unity Blade solidity is 0.65 Blades are equiangular and frictionless Blades are equiangular Blade velocity coefficient is unity ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A nozzle is said to be a convergent nozzle None of these When the cross-section of the nozzle decreases continuously from entrance to exit When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit When the cross-section of the nozzle increases continuously from entrance to exit None of these When the cross-section of the nozzle decreases continuously from entrance to exit When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit When the cross-section of the nozzle increases continuously from entrance to exit ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as Feed check valve Injector Feed pump Pressure gauge Feed check valve Injector Feed pump Pressure gauge ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water boils when its vapor pressure Equals to atmospheric pressure Equals that of the surroundings Equals the pressure of water in the container Equals 760 mm of mercury Equals to atmospheric pressure Equals that of the surroundings Equals the pressure of water in the container Equals 760 mm of mercury ANSWER DOWNLOAD EXAMIANS APP
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