Steam Boilers, Engines, Nozzles and Turbines Cut-off governing of steam engines is a method of controlling the engine output by varying Volume of intake steam Pressure of intake steam Temperature of intake steam All of these Volume of intake steam Pressure of intake steam Temperature of intake steam All of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction present between the steam and the nozzle surfaces reduces the heat drop by 15 to 25% 40 to 60% 25 to 40% 10 to 15% 15 to 25% 40 to 60% 25 to 40% 10 to 15% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The specific heat of superheated steam in kcal/kg is generally of the order of 0.8 0.3 0.5 0.1 0.8 0.3 0.5 0.1 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by (h - hf1)/2257 (h + hf1)/2257 (h × hf1)/2257 None of these (h - hf1)/2257 (h + hf1)/2257 (h × hf1)/2257 None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The change in internal energy in steam engines equals to Work done during adiabatic expansion Work done during compression Work done during the Rankine cycle Change in enthalpy Work done during adiabatic expansion Work done during compression Work done during the Rankine cycle Change in enthalpy ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A nozzle is said to be a convergent nozzle When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat 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 increases 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 None of these When the cross-section of the nozzle decreases continuously from entrance to exit When the cross-section of the nozzle increases continuously from entrance to exit ANSWER DOWNLOAD EXAMIANS APP
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