Engineering Thermodynamics Which of the following is the correct statement of the second law of thermodynamics? 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 transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work 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 transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Compressed air coming out from a punctured football Becomes hotter Becomes cooler May become hotter or cooler depending upon the humidity of the surrounding air Remains at the same temperature Becomes hotter Becomes cooler May become hotter or cooler depending upon the humidity of the surrounding air Remains at the same temperature ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle. Greater than None of these Less than Equal to Greater than None of these Less than Equal to ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The statement that molecular weights of all gases occupy the same volume is known as Law of thermodynamics Gas law Avogadro's hypothesis Dalton's law Law of thermodynamics Gas law Avogadro's hypothesis Dalton's law ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics When the gas is cooled at constant pressure, Its volume increases but temperature decreases Its temperature increases but volume decreases Both temperature and volume increases Both temperature and volume decreases Its volume increases but temperature decreases Its temperature increases but volume decreases Both temperature and volume increases Both temperature and volume decreases ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics An adiabatic wall is one which Encourages thermal interaction Permits thermal interaction Discourages thermal interaction Prevents thermal interaction Encourages thermal interaction Permits thermal interaction Discourages thermal interaction Prevents thermal interaction ANSWER DOWNLOAD EXAMIANS APP
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