Engineering Thermodynamics On volume basis, air contains following parts of oxygen 21 23 25 77 21 23 25 77 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle Combustion is at constant volume Maximum temperature is higher Expansion and compression are isentropic Heat rejection is lower Combustion is at constant volume Maximum temperature is higher Expansion and compression are isentropic Heat rejection is lower ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected) None of the listed here δQ = T.ds dQ = ds/T δQ = T/ds None of the listed here δQ = T.ds dQ = ds/T δQ = T/ds ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The more effective way of increasing efficiency of Carnot engine is to Increase lower temperature Decrease higher temperature Decrease lower temperature Increase higher temperature Increase lower temperature Decrease higher temperature Decrease lower temperature Increase higher temperature ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics When gas is heated at constant pressure, the heat supplied is utilized in Doing some external work None of these Increasing the internal energy of gas and also for doing some external work Increasing the internal energy of gas Doing some external work None of these Increasing the internal energy of gas and also for doing some external work Increasing the internal energy of gas ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called Parabolic expansion Adiabatic expansion Free expansion Hyperbolic expansion Parabolic expansion Adiabatic expansion Free expansion Hyperbolic expansion ANSWER DOWNLOAD EXAMIANS APP
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