Engineering Thermodynamics The condition for the reversibility of a cycle is All of these The working parts of the engine must be friction free All the processes, taking place in the cycle of operation, must be extremely slow The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process All of these The working parts of the engine must be friction free All the processes, taking place in the cycle of operation, must be extremely slow The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process 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 Maximum temperature is higher Expansion and compression are isentropic Combustion is at constant volume Heat rejection is lower Maximum temperature is higher Expansion and compression are isentropic Combustion is at constant volume Heat rejection is lower ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The value of n = 1 in the polytropic process indicates it to be Reversible process Isothermal process Irreversible process Adiabatic process Reversible process Isothermal process Irreversible process Adiabatic process ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The increase in entropy of a system represents Increase in temperature Degradation of energy Decrease in pressure Increase in availability of energy Increase in temperature Degradation of energy Decrease in pressure Increase in availability of energy ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics A cycle consisting of two constant pressure and two isentropic processes is known as Stirling cycle Carnot cycle None of the listed here Otto cycle Stirling cycle Carnot cycle None of the listed here Otto cycle ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics In S. I. units, the value of the universal gas constant is 8.314 J/kg mole-K 831.4 J/kg mole-K 8314 J/kg mole-K 83.14 J/kg mole-K 8.314 J/kg mole-K 831.4 J/kg mole-K 8314 J/kg mole-K 83.14 J/kg mole-K ANSWER DOWNLOAD EXAMIANS APP
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