# The sensible heat factor during cooling and dehumidification process is given by Where H1=Total heat of air entering the cooling coil, H2=Total heat of air leaving the cooling coil H3= Total heat of air at the end the humidification process

1.  H1-H2/H1-H3

2.  H2-H3/H1-H3

3.  H1-H3/H1-H2

4.  H1-H3/H2-H1

4

H2-H3/H1-H3

Explanation :
No Explanation available for this question

# Air-conditioning means

1.  Cooling and heating

2.  Removal of air impurities

3.  Dehumidifying

4.  All of the above

4

All of the above

Explanation :
No Explanation available for this question

# The comfort conditions in air-conditioning are at Where, DBT=Dry bulb temperature, RH=Relative humidity

1.  250C DBT and 100% RH

2.  200C DBT and 80% RH

3.  240C DBT and  60% RH

4.  250C DBT and 40% RH

4

240C DBT and  60\% RH

Explanation :
No Explanation available for this question

# The vapour compression refrigerators are based on the principle that fluids absorb heat while changing from a

1.  Vapour phase to liquid phase and give up heat in changing from a liquid phase to vapour phase

2.  Liquid phase to vapour phase and give uo heat in changing from a vapour phase to liquid phase

3.  Vapour phase to liquid phase only

4.  None of these

4

Liquid phase to vapour phase and give uo heat in changing from a vapour phase to liquid phase

Explanation :
No Explanation available for this question

# In a simple vapour compression cycle, the refrigerant is the form of dry saturated vapour before entering

1.  Condenser

2.  Evaporator

3.  Compressor

4.  Throttle valve

4

Compressor

Explanation :
No Explanation available for this question

# The main parts of a vapour compression refrigeration system in sequence are

1.  Compressor, condenser, evaporator and throttle valve

2.  Compressor, throttle valve, condenser and evaporator

3.  Compressor, evaporator, condenser and throttle valve

4.  Compressor, condenser, throttle valve and evaporator

4

Compressor, condenser, throttle valve and evaporator

Explanation :
No Explanation available for this question

# If a refrigerant is having low specific heat, then co-efficient of performance will be

1.  Lower

2.  Higher

3.  Same

4.  None of these

4

Higher

Explanation :
No Explanation available for this question

# The relation between relative humidity (φ) and degree of saturation (µ) is given by

1.  (pb-pv)/ (pb-ps) φ

2.  µ=φ (pb-ps)/ (pb-pv)

3.  µ=φ*pv/(pb-ps)

4.  µ=φ(pb+ps)/(pb-pv)

4

µ=φ (pb-ps)/ (pb-pv)

Explanation :
No Explanation available for this question

# Sensible heat factor (SHF) is defined as the ratio of

1.  Latent heat to sensible heat

2.  Sensible heat to latent heat

3.  Latent heat to total heat

4.  Sensible heat to total heat

4

Sensible heat to total heat

Explanation :
No Explanation available for this question

# Which of the following is psychometric process

1.  Humidification

2.  Dehumidification

3.  Sensible heating

5.  All of the above

5