Steam Boilers, Engines, Nozzles and Turbines A nozzle is said to be a convergent nozzle 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 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 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the workdone on the blades to the energy supplied to the blades, is called Nozzle efficiency Mechanical efficiency Gross or stage efficiency Blading efficiency Nozzle efficiency Mechanical efficiency Gross or stage efficiency Blading efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as Power of the boiler Efficiency of the fan Efficiency of the boiler Efficiency of the chimney Power of the boiler Efficiency of the fan Efficiency of the boiler Efficiency of the chimney ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of a valve rod is To provide simple harmonic motion to the D-slide valve To convert rotary motion of the crankshaft into to and fro motion of the valve rod To convert reciprocating motion of the piston into rotary motion of the crank To provide reciprocating motion to the slide valve To provide simple harmonic motion to the D-slide valve To convert rotary motion of the crankshaft into to and fro motion of the valve rod To convert reciprocating motion of the piston into rotary motion of the crank To provide reciprocating motion to the slide valve ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The shell of the Cochran boiler is made hemispherical None of these To withstand the pressure of steam inside the boiler Both (A) and (B) To give maximum space and strength None of these To withstand the pressure of steam inside the boiler Both (A) and (B) To give maximum space and strength ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In water wall furnace, the heat is transferred to the water walls by Radiation Convection Conduction Radiation and conduction Radiation Convection Conduction Radiation and conduction ANSWER DOWNLOAD EXAMIANS APP
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