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 transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source All of these It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work 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 All of these 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 The atomic mass of nitrogen is __________ oxygen. Equal to None of these More than Less than Equal to None of these More than Less than ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant) cv = R/ γ-1 cp - cv = R cv/ cp =R Both (B) and (C) cv = R/ γ-1 cp - cv = R cv/ cp =R Both (B) and (C) ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Which of the following parameters is constant for a mole for most of the gases at a given temperature and pressure Enthalpy Volume Entropy Mass Enthalpy Volume Entropy Mass ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics In an isothermal process, the internal energy Increases First increases and then decreases Decreases Remain constant Increases First increases and then decreases Decreases Remain constant ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by Joule Gay-Lussac Clausis Kelvin Joule Gay-Lussac Clausis Kelvin ANSWER DOWNLOAD EXAMIANS APP
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