When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be

Refrigeration and Air Conditioning
When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be

Heated and dehumidified

Cooled and humidified

Heated and humidified

Cooled and dehumidified

Heated and dehumidified

Cooled and humidified

Heated and humidified

Cooled and dehumidified

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Refrigeration and Air Conditioning
Which of the following refrigerant has the lowest freezing point?

R-22

R-12

Ammonia

R-11

R-22

R-12

Ammonia

R-11

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Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

20°C DBT and 50% RH

20°C DBT and 60% RH

26°C DBT and 60% RH

26°C DBT and 50% RH

20°C DBT and 50% RH

20°C DBT and 60% RH

26°C DBT and 60% RH

26°C DBT and 50% RH

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Refrigeration and Air Conditioning
As relative humidity decreases, the dew point temperature will be ___ wet bulb temperature.

None of the listed here

Higher than

Lower than

Same as

None of the listed here

Higher than

Lower than

Same as

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Refrigeration and Air Conditioning
The reciprocating refrigerant compressors are very suitable for

Small displacements and low condensing pressures

Small displacements and high condensing pressures

Large displacements and high condensing pressures

Large displacements and low condensing pressures

Small displacements and low condensing pressures

Small displacements and high condensing pressures

Large displacements and high condensing pressures

Large displacements and low condensing pressures

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Automatic expansion valve

High side float valve

Low side float valve

Thermostatic expansion valve

Automatic expansion valve

High side float valve

Low side float valve

Thermostatic expansion valve

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be

Refrigeration and Air Conditioning Which of the following refrigerant has the lowest freezing point?

Refrigeration and Air Conditioning The alignment circle is marked on the psychrometric chart at

Refrigeration and Air Conditioning As relative humidity decreases, the dew point temperature will be ___ wet bulb temperature.

Refrigeration and Air Conditioning The reciprocating refrigerant compressors are very suitable for

Refrigeration and Air Conditioning A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Refrigeration and Air Conditioning
When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be

Refrigeration and Air Conditioning
Which of the following refrigerant has the lowest freezing point?

Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

Refrigeration and Air Conditioning
As relative humidity decreases, the dew point temperature will be ___ wet bulb temperature.

Refrigeration and Air Conditioning
The reciprocating refrigerant compressors are very suitable for

Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called