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 Expansion and compression are isentropic Heat rejection is lower Maximum temperature is higher Combustion is at constant volume Expansion and compression are isentropic Heat rejection is lower Maximum temperature is higher ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The main cause for the irreversibility is Unrestricted expansion All of these Mechanical and fluid friction Heat transfer with a finite temperature difference Unrestricted expansion All of these Mechanical and fluid friction Heat transfer with a finite temperature difference ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will Decrease Increase/decrease depending on application Increase Remain unchanged Decrease Increase/decrease depending on application Increase Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics In S. I. units, the value of the universal gas constant is 83.14 J/kg mole-K 8314 J/kg mole-K 831.4 J/kg mole-K 8.314 J/kg mole-K 83.14 J/kg mole-K 8314 J/kg mole-K 831.4 J/kg mole-K 8.314 J/kg mole-K ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Diesel cycle consists of following four processes Two isentropic, one constant volume and one constant pressure Two isentropic and two constant pressures Two isothermal and two isentropic Two isentropic and two constant volumes Two isentropic, one constant volume and one constant pressure Two isentropic and two constant pressures Two isothermal and two isentropic Two isentropic and two constant volumes ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The condition for the reversibility of a cycle is All the processes, taking place in the cycle of operation, must be extremely slow The working parts of the engine must be friction free 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 All the processes, taking place in the cycle of operation, must be extremely slow The working parts of the engine must be friction free 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 ANSWER DOWNLOAD EXAMIANS APP
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