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GATE ME: Thermal Science Champion Quiz 1
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Question 1
H eat is removed from a molten metal of mass 2 kg at a constant rate of 10 kW till it is completely solidified. The cooling curve is shown in the figure.
Assuming uniform temperature throughout the volume of the metal during solidification, the latent heat of fusion of the metal (in kJ/kg) is __________
Assuming uniform temperature throughout the volume of the metal during solidification, the latent heat of fusion of the metal (in kJ/kg) is __________
Question 2
The relation 
= constant, where 
is the ratio of the specific heats of ideal gas, is applicable to
= constant, where is the ratio of the specific heats of ideal gas, is applicable to Question 3
Which is not part of thermodynamic processes?
Question 4
Heat Pump works on principle of:
Question 5
One kilogram of water at room temperature is brought into contact with a high temperature thermal reservoir. either
The entropy change of the universe is
The entropy change of the universe is
Question 6
A closed system contains 10 kg of saturated liquid ammonia at 10 °C. Heat addition required to convert the entire liquid into saturated vapour at a constant pressure is 16.2 MJ. If the entropy of the saturated liquid is 0.88 kJ/kg.K, the entropy (in kJ/kg.K) of saturated vapour is _________
Question 7
In a steady state steady flow process taking place in a device with a single inlet and a single outlet, the work done per unit mass flow rate is given by 
where v is the specific volume and p is the pressure. The expression for w given above
where v is the specific volume and p is the pressure. The expression for w given above Question 8
A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?
Question 9
One kg of ice at 0 °C is completely melted into water at 0 °C at 1 bar pressure. The latent heat of fusion of water is 333 kJ/kg and the densities of water and ice at 0 °C are 999.0 kg/m3 and 916.0 kg/m3, respectively. What are the approximate values of the work done for the process?
Question 10
Match items from groups I, II, III, IV and V
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