Engineering Thermodynamics According to First law of thermodynamics, Work-done by a system is equal to the heat transferred by the system Total internal energy of a system during a process remains constant Total energy of a system remains constant Internal energy, enthalpy and entropy during a process remain constant Work-done by a system is equal to the heat transferred by the system Total internal energy of a system during a process remains constant Total energy of a system remains constant Internal energy, enthalpy and entropy during a process remain constant ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics One kilowatt is equal to 1 × 106 N-m/s 1 N-m/s 100 N-m 1000 N-m/s 1 × 106 N-m/s 1 N-m/s 100 N-m 1000 N-m/s ANSWER DOWNLOAD EXAMIANS APP
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 There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy 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 It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy 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 compression ratio is the ratio of Swept volume to clearance volume Total volume to swept volume Total volume to clearance volume Swept volume to total volume Swept volume to clearance volume Total volume to swept volume Total volume to clearance volume Swept volume to total volume ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will Remain unchanged Increase/decrease depending on application Increase Decrease Remain unchanged Increase/decrease depending on application Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The value of n = 1 in the polytropic process indicates it to be Irreversible process Isothermal process Reversible process Adiabatic process Irreversible process Isothermal process Reversible process Adiabatic process ANSWER DOWNLOAD EXAMIANS APP
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