Skip to main content
Sarkari MCQs Government Exam Question Bank
Menu
Question no. 58588

An extensive property of a system is defined as one whose value______________________?

Select your answer for: An extensive property of a system is defined as one whose value______________________?
Show answer

Answer: A. depends on the mass of the system like volume

Explanation

Extensive thermodynamic properties scale directly with the total quantity of matter contained within the given system. System volume increases proportionally when you add more mass to the existing thermodynamic control volume. Doubling the overall mass of the system will correspondingly double the measured value of any extensive property. Thermodynamic properties categorize broadly into extensive properties and intensive properties based on their mass dependence. Examples of extensive properties include total volume, total internal energy, enthalpy, and total entropy. Extensive properties can be converted into intensive properties by dividing them by the total mass or moles.

Properties that do not depend on system mass are classified as intensive properties rather than extensive ones. Temperature and pressure are classic examples of intensive properties that remain uniform regardless of system size. Path independence describes state functions rather than distinguishing between extensive and intensive thermodynamic variables.

Subject
Engineering
Topic
—
Difficulty
medium

Related questions

Q1. The first law of thermodynamics___________________?

Select your answer for: The first law of thermodynamics___________________?
Show answer

Answer: E. all of the above

The first law establishes the quantitative equivalence between heat and work interactions. It allows engineers to calculate internal energy changes using conservation principles. However, it lacks the ability to determin...

Q2. An engine functions between 900°K and T2, while another operates between T2 and 400°K. For both to produce identical work, the value of T2 must be________________?

Select your answer for: An engine functions between 900°K and T2, while another operates between T2 and 400°K. For both to produce identical work, the value of T2 must be________________?
Show answer

Answer: A. 650°K

Serial Carnot engines producing equal work output require a specific intermediate temperature calculation. Using harmonic mean temperature principles for equal work output yields 650 Kelvin. This balanced temperature dro...

Q3. For a thermodynamic process to achieve reversibility, the temperature variance between the hot body and the working substance ought to be___________________?

Select your answer for: For a thermodynamic process to achieve reversibility, the temperature variance between the hot body and the working substance ought to be___________________?
Show answer

Answer: A. zero

Reversibility demands that systems remain infinitesimally close to thermodynamic equilibrium throughout every single operational stage. Finite temperature differences drive spontaneous heat transfer, which introduces irr...

Q4. Compressed air escaping from a punctured football___________________?

Select your answer for: Compressed air escaping from a punctured football___________________?
Show answer

Answer: B. becomes cooler1

Rapid expansion of escaping air drops the gas pressure and temperature quickly. Work is done by the expanding gas against the surrounding atmospheric pressure. This rapid adiabatic process converts thermal energy into me...

Q5. Carnot cycle efficiency attains maximum value for__________________?

Select your answer for: Carnot cycle efficiency attains maximum value for__________________?
Show answer

Answer: A. reversible engine

Reversible engines operate without internal or external irreversibilities like friction or heat loss. The Carnot theorem proves that no engine can be more efficient than a reversible engine. Reversibility ensures maximum...

Q6. A perfect gas at 27°C undergoes constant pressure heating until its volume doubles, resulting in a final temperature of________________?

Select your answer for: A perfect gas at 27°C undergoes constant pressure heating until its volume doubles, resulting in a final temperature of________________?
Show answer

Answer: B. 327°C

Charles law states that volume is directly proportional to absolute temperature during constant pressure processes. Converting the initial temperature of 27 degrees Celsius to Kelvin gives a starting value of 300 Kelvin....

New!

Mock Test System is now available!

Prepare for your exam with interactive mock tests. Select your subjects, attempt 100 random MCQs against the clock, and see exactly where you stand.

Start Mock Test