List of top Agricultural Engineering and Technology Questions on Thermodynamics asked in ICAR AIEEA (PG)

The efficiency of a Carnot heat engine operating between two reservoirs at temperatures TH (Hot source) and TC (Cold sink) is given by:

Given below are two statements:

Statement (I): Internal energy and enthalpy are functions of temperature alone.
Statement (II): Specific heat can vary strongly with temperature and pressure of a substance.

In light of the above statements, choose the most appropriate answer from the options given below.

For the same compression ratio, the efficiency of diesel cycle approaches that of otto cycle as the Cut-off ratio approaches

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The cylinder wall temperature of air-cooled engine is generally higher than that of water cooled engine
Reason R: The control of cylinder temperature is more difficult in air cooled engines
In light of the above statements, choose the correct answer from the options given below

Statement I: Efficiency of an Otto cycle increases as the compression ratio decreases.
Statement II: As the fuel-cutoff approaches zero, the efficiency of diesel cycle approaches that of Otto cycle for same compression ratio.
In light of the above statements, choose the correct answer from the options given below:

Statement I: Efficiency of an Otto cycle increases as the compression ratio decreases.
Statement II: As the fuel-cutoff approaches zero, the efficiency of diesel cycle approaches that of Otto cycle for same compression ratio.
In light of the above statements, choose the correct answer from the options given below:

Amount of heat required to change unit mass of substance from one phase to another phase is known as:

Temperature and pressure combination at which water co-exist is all forms is known as

Positive entropy of a thermodynamic system indicates