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ESE ME: Thermal Science Champion Quiz 2
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Question 1
A gas having a negative Joule-Thompson coefficient (μ < 0), when throttled, will
Question 2
According to the Clapeyron equation, which one of the following gives the slope of the saturated liquid pressure-temperature curve 
?
(suffix f and g denote saturated liquid and saturated vapour respectively)
? (suffix f and g denote saturated liquid and saturated vapour respectively)
Question 3
A carnot engine rejects 30% of absorbed heat to a sink at 
. The temperature of the heat source is
. The temperature of the heat source is Question 4
A Carnot engine operates between 370 C and 3470 C. If the engine produce 620 kJ of work, the entropy change during heat addition is____
Question 5
Assertion (A): In an isolated system, the heat transfer 
and the work transfer 
are always zero
Reason (R): In an isolated system, the entropy always remains constant.
and the work transfer are always zero Reason (R): In an isolated system, the entropy always remains constant.
Question 6
The loss of availability energy associated with the transfer of 1000 kJ of heat from a constant temperature system at 600 K to another at 400 K when the environment temperature is 300 K _______.
Question 7
The irreversibility is defined as the difference of the maximum useful work and actual work: 
. How can this be alternatively expressed?
. How can this be alternatively expressed? Question 8
Consider the following statrements:
1) Boiling of water from a heat source at the same boiling temperature.
2) Theoretical isothermal compression of a gas.
3) Theorectical polytropic compression process with heat rejection to atmosphere.
4) Diffusion of two ideal gases into each other at constant pressure and temperature.
Which of tghese processes are irreversible?
1) Boiling of water from a heat source at the same boiling temperature.
2) Theoretical isothermal compression of a gas.
3) Theorectical polytropic compression process with heat rejection to atmosphere.
4) Diffusion of two ideal gases into each other at constant pressure and temperature.
Which of tghese processes are irreversible?
Question 9
Internal energy of a system is dependent on the following aspects:
1) Molecular weight
2) Molecular structure
3) Degree of molecular activity
Which of the above are correct?
1) Molecular weight
2) Molecular structure
3) Degree of molecular activity
Which of the above are correct?
Question 10
When a system is taken from state ‘x’ to ‘y’ 30 kJ of heat flows into the system and the system does 10 kJ of work. When the system is returned from ‘y’ to ‘x’ along another path, work done on the system is 8 kJ. What is the amount of heat liberated or absorbed?
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