Engineering Thermodynamics The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected) δQ = T/ds δQ = T.ds dQ = ds/T None of the listed here δQ = T/ds δQ = T.ds dQ = ds/T None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics Which of the following is an intensive property of a thermodynamic system? Mass Temperature Energy Volume Mass Temperature Energy Volume ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics A gas is compressed in a cylinder by a movable piston to a volume one half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be 3000 Nm 300,000 Nm 300 Nm 30 Nm 3000 Nm 300,000 Nm 300 Nm 30 Nm ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The door of a running refrigerator inside a room was left open. Which of the following statements is correct? The temperature of the air in room will remain unaffected The room will be cooled to the temperature inside the refrigerator The room will be cooled very slightly The room will be gradually warmed up The temperature of the air in room will remain unaffected The room will be cooled to the temperature inside the refrigerator The room will be cooled very slightly The room will be gradually warmed up ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The standard value of atmospheric pressure taken at sea level is 760 mm of Hg 1.013 bar 1013 × 102 N/m2 All of these 760 mm of Hg 1.013 bar 1013 × 102 N/m2 All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Thermodynamics The condition for the reversibility of a cycle is The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process The working parts of the engine must be friction free All the processes, taking place in the cycle of operation, must be extremely slow All of these The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process The working parts of the engine must be friction free All the processes, taking place in the cycle of operation, must be extremely slow All of these ANSWER DOWNLOAD EXAMIANS APP
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