Engineering Thermodynamics Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle Expansion and compression are isentropic Combustion is at constant volume Maximum temperature is higher Heat rejection is lower Expansion and compression are isentropic Combustion is at constant volume Maximum temperature is higher Heat rejection is lower ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant) 2 Ru × T Ru × T 1.5 Ru × T 3 Ru × T 2 Ru × T Ru × T 1.5 Ru × T 3 Ru × T ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Which of the following is the correct statement of the second law of thermodynamics? There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source All of these There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The compression ratio for petrol engines is 3 to 6 10 to 20 15 to 30 5 to 8 3 to 6 10 to 20 15 to 30 5 to 8 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Extensive property of a system is one whose value Is not dependent on the path followed but on the state Is dependent on the path followed and not on the state Depends on the mass of the system like volume Does not depend on the mass of the system, like temperature, pressure, etc. Is not dependent on the path followed but on the state Is dependent on the path followed and not on the state Depends on the mass of the system like volume Does not depend on the mass of the system, like temperature, pressure, etc. ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics For same compression ratio and for same heat added Otto cycle is more efficient than Diesel cycle Diesel cycle is more efficient than Otto cycle Both Otto and Diesel cycles are equally efficient Efficiency depends on other factors Otto cycle is more efficient than Diesel cycle Diesel cycle is more efficient than Otto cycle Both Otto and Diesel cycles are equally efficient Efficiency depends on other factors ANSWER DOWNLOAD EXAMIANS APP
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