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In a process occurring in a closed system F , the heat transferred from F to the surroundings E is 600 J. If the temperature of E is 300 K and that of F is in the range 380 - 400 K , the entropy changes of the sur1 AnswerA reversible cycle receives 40 kJ of heat from one heat source at a temperature of 127 C and 37 kJ from another heat source at 97 C. The heat rejected (in kJ) to the heat sink at 47 C is __________ Gate-20161 AnswerThe contents of a well-insulated tank are heated by a resistor of 23Ω in which 10A current is flowing. -gate-mechanical-20111 AnswerAdiabatic work of 200 kJ is done on ideal gas of mass m = 1 kg (Cv=1000 j/kgk ), which is stored in a rigid container at a pressure of 100 kPa and temperature 300 K.1 AnswerHot water at 95 C is used in a plate heat exchanger for heating 2 kg s^-1 fruit juice from 45C to 75C. Specific heat capacity of fruit juice is 3.7 kJ kg^-1 K ^-1. Final temperature of the hot water is 70C. Overall heat transfer coefficient is 1122 W1 AnswerOne kg of an ideal gas (gas constant R=287 J/kg.K) undergoes an irreversible process from state-1 (1 bar, 300 K) to state -2 (2 bar, 300 K). The change in specific entropy (s1-s2) of the gas (in J/kg.K) in the process is 1 AnswerMilk enters into the heating section of a high temperature short time (HTST) pasteurizati on plant at a temperature of 45ºC and leaves at 72 ºC. Hot water at temperature of 95 ºC enters counter - currently into the heat exchanger 1 AnswerA pipe of 25mm outer diameter carries steam. -gate-mechanical-20111 AnswerThe heat loss from a fin in 6W. The effectiveness and efficiency of the fin are 3 and 0.75, respectively. The heat loss (in W) from the fin, keeping the entire fin surface at base temperature, is ________.1 AnswerThe internal energy of an ideal gas is a function of Gate-20161 AnswerFill in the blanks. GATE- Chemical Engineering- 20131 AnswerPlot a graph showing the variation of specific heat of water with temperature. Physics Cbse class 11 20161 Answer Two moles of ideal helium gas are in a rubber balloon at 30ºC. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to 35ºC. The amount of heat required in raising the temperature is nearly (take R = 8.31 J/mol.K) -jee main 2012 physics 1 AnswerThe hot tearing in a metal casting is due to: (Gate mechanical 2014 question paper)1 AnswerA heat pump absorbs 10kW of heat from outside environment at 250 K while absorbing 15 kW of work. It delivers the heat to a room that must be kept warm at 300K. The coefficient of Performance (COP) of the heat pump is _________.1 AnswerThe increased temperature in a city is called:1 AnswerDescribe the roles of heat, primers and the bacterium Thermus aquaticus in the process of PCR. cbse-Biology-class-121 AnswerA linear time invariant (LTI) system with the transfer function1 AnswerThe thermodynamic state of a closed system containing a pure fluid changes from (T 1 , p 1 ) to (T 2 , p 2 ) , where T and p denote the temperatur e and pressure, respectively. Let Q denote the heat absorbed ( > 0 if absorb1 AnswerDuring normalizing process of steel, the specimen is heated -Mechanical Engineering-gate-20121 Answer