GATE 2019: Thermodynamics Quiz 2 (App update required to attempt this test)

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Question 1

The unit of power in S.I. units is:

• ANewton
• BPascal
• CJoule
• DWatt

Question 2

In an adiabatic process 4000 J of work is performed on a system. In the nonadiabatic process by which the system returns to its original state 1000J of heat is added to the system. What is the work done during non-adiabatic process?

• A+ 5000 J
• B- 5000 J
• C+ 500 J
• D- 500 J

Question 3

What will be the temperature (^oC) corresponding to the thermometric property of 3.5 on Celsius scale. If at the ice point and steam point the thermometric properties are found to be 2.5 and 8.5 respectively.
A temperature scale of certain thermometer is given by the relation:
t = a ln p + b
Where a and b are constants and p is the thermometric property of the fluid in the thermometer.

Answer

Question 4

Evaluate the change in internal energy and the work done for a closed system of constant volume experiences a temperature rise of 30 °C when a certain process occurs. The specific heat at constant volume for the pure substance comprising the system is 1.2 kJ/kg °C and the system contains 2.5 kg of this substance.

• A- 90 kJ, 40 kJ
• B95 kJ, - 50 kJ
• C- 95 kJ, 50 kJ
• D90 kJ, 0 kJ

Question 5

The given figure shows the variation of force in an elementary system which undergoes a process during which the plunger position
changes from 0 to 3 m. lf the internal energy of the system at the end of the process is 6.5 J higher, then the heat absorbed during the
process is:
force
                                                   displacement

• A2400 J
• B240 J
• C2.4 J
• D24 J

Question 6

A new scale B of temperature is divided in such a way that freezing point of ice is 80^o B and boiling point is 320^o B. The temperature at which both the Celsius and new temperature scale reading would be same is

• A52.14^oC
• B82.5^oC
• C– 57.14^oC
• D-82.15^oC

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