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Thermodynamics Quiz 1
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Question 1
A 1000 Ω resistor carrying a current of 10 A for 2 sec is kept at a constant temperature of 27 °C by a stream of cooling water. Entropy change of the universe is ________ J/K.
Question 2
Thermometric property used in a constant volume gas thermometer
Question 3
A reversible heat engine works between two thermal reservoir having source temperature 777°C & sink temp. 27°C. If the heat supplied to engine 70 kW. Calculate the work done by the engine ___________.
Question 4
Choose the correct option for the Joule-Thomson coefficient and its value for the heating:
Question 5
A fluid flowing along a pipeline undergoes a throttling process from 10 bar to 1 bar is passing through a partially open valve. Before throttling, the specific volume of the fluid is 0.5 m3/kg and after throttling is 2.0 m3/kg. The change in specific internal energy during the throttling process is_______.
Question 6
Which of the following is true about the degree of disorder of a mixture of two gases?
Question 7
One kg of steam sample contains 0.8 kg dry steam; ¡t’s dryness fraction is
Question 8
A heat engine is supplied with 250 kJ/s of heat at a constant fixed temperature of 
; the heat is rejected at 
, the cycle is reversible, then the amount of heat rejected is______.
; the heat is rejected at , the cycle is reversible, then the amount of heat rejected is______.Question 9
Calculate the net heat interaction (kJ) for the cycle shown in the figure.
Question 10
The internal energy of a certain system is a function of temperature alone and is given by formula E = 25 + 0.25 t kJ (where t is the temperature). If this system executes a process for which the work done by it per degree temperature increase is 0.75 kN-m, the heat-interaction per degree temperature increase is _________ kJ.
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