Top 250+ Solved Engineering Thermodynamics MCQ Questions Answer
Q. The gas constant of the mixture is the of the gas constants of the components.
a. average
b. weighted mean
c. sum
d. difference of the highest and the lowest
Q. When gases which are at equal pressure and temperature are mixed adiabatically without work, then
a. internal energy of the gaseous system remains constant
b. heat transfer of the gaseous system remains constant
c. entropy of the gaseous system remains constant
d. all of the mentioned
Q. Which of the following statement is true?
a. the chart is plotted for pressure equal to 760mm hg
b. the constant wbt line represents adiabatic saturation process
c. the constant wbt line coincides with constant enthalpy line
d. all of the mentioned
Q. In sensible heating or cooling,
a. work done remains constant
b. dry bulb temperature or air remains constant
c. both of the mentioned
d. none of the mentioned
Q. Heating and humidification is done in
a. summer air conditioning
b. winter air conditioning
c. both of the mentioned
d. none of the mentioned
Q. Which of the following is an absorbent?
a. silica gel
b. activated alumina
c. both of the mentioned
d. none of the mentioned
Q. When air passes through silica gel,
a. it absorbs water vapour molecules
b. latent heat of condensation is released
c. dbt of air increases
d. all of the mentioned
Q. In adiabatic evaporative cooling, heat transfer between chamber and surroundings is
a. zero
b. high
c. low
d. none of the mentioned
Q. Cooling towers are rated in terms of
a. approach
b. range
c. both of the mentioned
d. none of the mentioned
Q. Dry air consists of
a. oxygen, nitrogen
b. carbon dioxide
c. hydrogen, argon
d. all of the mentioned