GATE ME 1993 | Entropy and Irreversibility Question 28 | Thermodynamics

Thermodynamics

Calculation of Work and Heat

Entropy and Irreversibility

Properties of Pure Substances

Basic Concepts and Zeroth Law

First Law of Thermodynamics

Rankine Cycle

Availability

Second Law of Thermodynamics

GATE ME 1993

MCQ (Single Correct Answer)

-0.3

Which among the following relations is/are valid ONLY for reversible process undergone by a pure substance?

$$\delta Q = dU + \delta W$$

$$T\,ds = dU + \delta W$$

$$T\,ds = dU + p\,dv$$

$$\delta Q = p\,dv + dU$$

GATE ME 1993

MCQ (Single Correct Answer)

-0.3

When a system executes an irreversible cycle:

$$\oint {{{\delta Q} \over T}} < 0$$

$$\oint {dS > 0} $$

$$\oint {dS = 0} $$

$$\oint {{{\delta Q} \over T}} > 0$$

Questions Asked from Marks 1

GATE ME Subjects

Engineering Mechanics

Machine Design

Strength of Materials

Heat Transfer

Production Engineering

Industrial Engineering

Turbo Machinery

Theory of Machines

Engineering Mathematics

Fluid Mechanics

Thermodynamics

General Aptitude