Engineering Thermodynamics Which of the following is the correct statement of the second law of thermodynamics? 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 All of these There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The ___ is obtained when carbonization of coal is carried out at 500° to 700° C. Hard coal Bituminous coal Soft coal Pulverized coal Hard coal Bituminous coal Soft coal Pulverized coal ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The value of n = 1 in the polytropic process indicates it to be Adiabatic process Irreversible process Reversible process Isothermal process Adiabatic process Irreversible process Reversible process Isothermal process ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics For which of the following substances, the internal energy and enthalpy are the functions of temperature only Water Saturated steam Any gas Perfect gas Water Saturated steam Any gas Perfect gas ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called Zeroth law of thermodynamics First law of thermodynamics Kelvin Planck's law Second law of thermodynamics Zeroth law of thermodynamics First law of thermodynamics Kelvin Planck's law Second law of thermodynamics ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics An open system is one in which Mass does not cross boundaries of the system, though energy may do so Mass crosses the boundary but not the energy Both energy and mass cross the boundaries of the system Neither mass nor energy crosses the boundaries of the system Mass does not cross boundaries of the system, though energy may do so Mass crosses the boundary but not the energy Both energy and mass cross the boundaries of the system Neither mass nor energy crosses the boundaries of the system ANSWER DOWNLOAD EXAMIANS APP
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