Engineering Thermodynamics The condition for the reversibility of a cycle is All of these 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 the processes, taking place in the cycle of operation, must be extremely slow All of these 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 the processes, taking place in the cycle of operation, must be extremely slow ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The value of one bar (in S. I. units) is equal to 1 × 103 N/m2 1 × 105 N/m2 1 × 104 N/m2 1 × 102 N/m2 1 × 103 N/m2 1 × 105 N/m2 1 × 104 N/m2 1 × 102 N/m2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics According to Avogadro's law, for a given pressure and temperature, each molecule of a gas Occupies volume proportional to its specific weight Occupies same volume Occupies volume inversely proportional to its molecular weight Occupies volume inversely proportional to its specific weight Occupies volume proportional to its specific weight Occupies same volume Occupies volume inversely proportional to its molecular weight Occupies volume inversely proportional to its specific weight ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Molecular volume of any perfect gas at 600 × 103 N/m² and 27°C will be 4.17 m3/kg mol 41.7 m3/kg mol 0.15 m3/kg mol 400 m3/kg mol 4.17 m3/kg mol 41.7 m3/kg mol 0.15 m3/kg mol 400 m3/kg mol ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats) 1 + (1/ rγ - 1) 1 - (1/ rγ - 1) 1 + rγ - 1 1 - rγ - 1 1 + (1/ rγ - 1) 1 - (1/ rγ - 1) 1 + rγ - 1 1 - rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as Second law of thermodynamics Kinetic theory of gases First law of thermodynamics Zeroth law of thermodynamics Second law of thermodynamics Kinetic theory of gases First law of thermodynamics Zeroth law of thermodynamics ANSWER DOWNLOAD EXAMIANS APP
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