Complete GATE XE 2026 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 103–105 of 197. Imported answers require review unless explicitly marked reviewed.

Paper practice 197 questionsPage 35 of 66

Question 103

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XE-ENAT2 marksNeeds review
Consider a single component fluid at saturation conditions having the following properties.
Latent heat of vaporization,

kJ/kmol
Compressibility factor for the vapor phase,


is the saturation pressure

is the temperature

is the molar specific volume of the vapor phase
Assume that

, where

is the difference in the molar specific volume of the vapor and the liquid phases
Universal gas constant,

kJ/kmol-K
Using the Clapeyron equation, the quantity

(in K) is ________ (rounded off to two decimal places).

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Question 104

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XE-ENAT2 marksNeeds review
It is given that:

and

. Here

is the mass specific enthalpy,

is the mass specific volume,

is the volume expansivity, and

is the mass specific heat capacity at constant pressure.

and

represent the temperature and the pressure, respectively. The inversion temperature is the temperature at which the Joule-Thomson coefficient,

, goes to zero.
Consider a fluid with properties:

m

/kg,

kJ/kg-K, and

1/K;
The inversion temperature (in K) for the fluid is ________ (rounded off to two decimal places).

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Question 105

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XE-ENAT2 marksNeeds review
A stream of moist air enters an adiabatic saturator at 45 °C and 101 kPa and leaves as a saturated mixture at 30 °C. Make-up water to the saturator is supplied at 30 °C. The amount of make-up water (in grams per kg of dry air) supplied is __________ (rounded off to two decimal places).
Use the following data:
Specific heat capacity of water is 4.2 kJ/kg-K
Specific heat capacity of air at constant pressure is 1 kJ/kg-K
Saturated water properties:
At 30 °C: specific enthalpy of saturated water vapor is 2556 kJ/kg-K, specific enthalpy of saturated liquid water is 125.7 kJ/kg-K, and saturation pressure is 4.25 kPa
At 45 °C: specific enthalpy of saturated water vapor is 2582 kJ/kg-K, specific enthalpy of saturated liquid water is 188.4 kJ/kg-K, and saturation pressure is 9.60 kPa

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