Engineering Thermodynamics Which of the following is the correct statement of the second law of thermodynamics? 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 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 ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The efficiency of the Carnot cycle may be increased by Keeping the lowest temperature constant Decreasing the highest temperature Increasing the lowest temperature Increasing the highest temperature Keeping the lowest temperature constant Decreasing the highest temperature Increasing the lowest temperature Increasing the highest temperature ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be Minimum Zero Infinity Maximum Minimum Zero Infinity Maximum ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is -140 kJ -80 kJ -40 kJ +60 kJ -140 kJ -80 kJ -40 kJ +60 kJ ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The fuel mostly used in blast furnace for extracting pig iron from iron ores is Pulverized coal Hard coke Soft coke Bituminous coal Pulverized coal Hard coke Soft coke Bituminous coal ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order Diesel cycle, Otto cycle, Dual cycle Otto cycle, Diesel cycle, Dual cycle Dual cycle, Otto cycle, Diesel cycle Dual cycle, Diesel cycle, Otto cycle Diesel cycle, Otto cycle, Dual cycle Otto cycle, Diesel cycle, Dual cycle Dual cycle, Otto cycle, Diesel cycle Dual cycle, Diesel cycle, Otto cycle ANSWER DOWNLOAD EXAMIANS APP
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