Question

The condition for the reversibility of a cycle is

a.

the pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process

b.

all the processes, taking place in the cycle of operation, must be extremely slow

c.

the working parts of the engine must be friction free

d.

all of the above

Answer: (d).all of the above

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. The condition for the reversibility of a cycle is

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. In open cycle gas turbine plants

Q. In an isolated system, neither the heat and work nor the, mass of the working substance crosses the boundary of the system.

Q. The compression ratio is the ratio of

Q. When a fluid is allowed to expand suddenly into a vaccum chamber through an orifice of large dimensions, the process is known as free expansion process.

Q. The efficiency of Ericsson cycle is __________ Carnot cycle.

Q. One molecule of oxygen consists of __________ atoms of oxygen.

Q. According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.

Q. The hard coke is obtained when carbonisation of coal is carried out at

Q. According to First law of thermodynamics,

Q. Stirling cycle consists of

Q. According to kinetic theory of gases, the kinetic energy of translation of a molecule is proportional to

Q. The amount of heat given out by the complete combustion of 1 kg of fuel is known as calorific value of solid or liquid fuel.

Q. The conditions of temperature and pressure at 0°C (273K) and 760 mm of Hg pressure are termed as __________ temperature and pressure.

Q. The value of cp/cv for air is

Q. The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

Q. For the same compression ratio, the efficiency of dual combustion cycle is

Q. In an irreversible process, there is a

Q. The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.

Q. The change of entropy, when heat is removed from the gas, is negative.

Q. Coke is produced

Recommended Subjects

Are you eager to expand your knowledge beyond Mechanical Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!