A system is said to be in thermodynamic equilibrium if it maintains ______ equilibrium.  A. Mechanical and phase  B. Thermal and chemical  C. Thermal, mechanical and chemical  D. Thermal, phase, mechanical and chemical

A system is said to be in thermodynamic equilibrium if it maintains ______ equilibrium.
 A. Mechanical and phase
 B. Thermal and chemical
 C. Thermal, mechanical and chemical
 D. Thermal, phase, mechanical and chemical
by

1 Answer

Answer :

Thermal, phase, mechanical and chemical
by

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The area under the temperatureentropy curve (T – s curve) of any thermodynamic process represents  A. heat absorbed  B. heat rejected  C. either (a) or (b)  D. none of these

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A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as  A. reversible cycle  B. irreversible cycle  C. thermodynamic cycle  D. none of these

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Last Answer : Answer: C

The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that  (a) carnot cycle can’t work with saturated steam  (b) heat is supplied to water at temperature below the maximum temperature of the cycle  (c) a rankine cycle receives heat at two places  (d) rankine cycle is hypothetical  (e) none of the above.

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A perpetual motion machine is  (a) a thermodynamic machine  (b) a non-thermodynamic machine  (c) a hypothetical machine  (d) a hypothetical machine whose opera-tion would violate the laws of thermodynamics  (e) an inefficient machine.

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Last Answer : Answer : d

Measurement of temperature is based on  (a) thermodynamic properties  (b) zeroth law of thermodynamics  (c) first law of thermodynamics  (d) second law of thermodynamics  (e) joule’s law.

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Energy can neither be created nor destroyed but can be converted from one form to other is inferred from  (a) zeroth low of thermodynamic  (b) first law of thermodynamics  (c) second law to thermodynamics  (d) basic law of thermodynamics  (e) claussius statement.

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Entropy change depends on  (a) heat transfer  (b) mass transfer  (c) change of temperature  (d) thermodynamic state  (e) change of pressure and volume.

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Last Answer : Answer : a

For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be  (a) zero  (b) minimum  (d) maximum  (d) infinity  (e) there is no such criterion.

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Last Answer : Answer : a