A. Wet bulb temperature
B. Dry bulb temperature
C. Relative humidity
D. Specific humidity
Related Mcqs:
- On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)s and the slope of the reversible isothermal line (∂P/∂V)T are related as (where, y = Cp/Cv) ?
A. (∂P/∂V)S = (∂P/∂V)T
B. (∂P/∂V)S = [(∂P/∂V)T]Y
C. (∂P/∂V)S = y(∂P/∂V)T
D. (∂P/∂V)S = 1/y(∂P/∂V)T - Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is___________________?
A. 300 × (32/7)
B. 300 × (33/5)
C. 300 × (333/7)
D. 300 × (35/7) - Entropy of a substance remains constant during a/an ____________ change?
A. Reversible isothermal
B. Irreversible isothermal
C. Reversible adiabatic
D. None of these - The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then_________________?
A. Wet bulb temperature=dry bulb temperature
B. Wet bulb temperature=dew point temperature
C. Saturation temperature=dew point temperature
D. All ‘A’, ‘B’ & ‘C’ - The dew point of moist air becomes ____________________ with decrease in its relative humidity ?
A. Less than the wet bulb temperature
B. More than the wet bulb temperature
C. More than the dry bulb temperature
D. Equal to wet bulb temperature - A psychrometer does not measure the __________________ temperature of moist air?
A. Dew point
B. Dry bulb
C. Wet bulb
D. None of these - Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air’s water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes_________________?
A. Poor visibility due to sky darkening
B. Irritation in eyes
C. Respiratory trouble
D. All A., B. and C. - Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes________________?
A. Fading of dyes on textiles
B. Corrosion, tarnishing & soiling of metals
C. Reduced strength of textiles
D. All A., B. and C. - The adiabatic throttling process of a perfect gas is one of constant enthalpy_________________?
A. In which there is a temperature drop
B. Which is exemplified by a non-steady flow expansion
C. Which can be performed in a pipe with a constriction
D. In which there is an increase in temperature - During adiabatic expansion of gas___________________?
A. Pressure remains constant
B. Pressure is increased
C. Temperature remains constant
D. None of these
