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 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will Increase/decrease depending on application Decrease Increase Remain unchanged Increase/decrease depending on application Decrease Increase Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics If in the equation pvn = C, the value of n = ∝, then the process is called Isothermal process Constant volume process Adiabatic process Constant pressure process Isothermal process Constant volume process Adiabatic process Constant pressure process ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The principal constituents of a fuel are Sulphur and hydrogen Carbon and hydrogen Sulphur and oxygen Oxygen and hydrogen Sulphur and hydrogen Carbon and hydrogen Sulphur and oxygen Oxygen and hydrogen ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The amount of heat generated per kg of fuel is known as Calorific value Lower calorific value Higher calorific value Heat energy Calorific value Lower calorific value Higher calorific value Heat energy ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Which of the following variables controls the physical properties of a perfect gas? Volume Pressure All of these Temperature Volume Pressure All of these Temperature ANSWER DOWNLOAD EXAMIANS APP
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