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Mechanical Engineering

At 100% relative humidity, wet bulb temperature, dry bulb temperature, dew point temperature and saturation temperature are equal.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: At 100% relative humidity, wet bulb temperature, dry bulb temperature, dew point temperature and saturation temperature are equal.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

At 100% relative humidity, wet bulb temperature, dry bulb temperature, dew point temperature and saturation temperature are equal. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a psychrometric chart, specific humidity (moisture content) lines are

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a psychrometric chart, specific humidity (moisture content) lines are
[A].

vertical and uniformly spaced

[B].

horizontal and uniformly spaced

[C].

horizontal and non-uniformly spaced

[D].

curved lines

Answer: Option B

Explanation:

No answer description available for this question.

In a psychrometric chart, specific humidity (moisture content) lines are Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a psychrometric chart, dew point temperature lines are horizontal and non-uniformly spaced.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a psychrometric chart, dew point temperature lines are horizontal and non-uniformly spaced.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

In a psychrometric chart, dew point temperature lines are horizontal and non-uniformly spaced. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

Dew point temperature corresponds to the saturation temperature of vapour at its partial pressure.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: Dew point temperature corresponds to the saturation temperature of vapour at its partial pressure.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

Dew point temperature corresponds to the saturation temperature of vapour at its partial pressure. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

According to Dalton’s law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour)

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: According to Dalton’s law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour)
[A].

Pb = pa – pv

[B].

Pb = pa + pv

[C].

Pb = pa x pv

[D].

Pb = pa/pv

Answer: Option B

Explanation:

No answer description available for this question.

According to Dalton’s law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour) Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: For unsaturated air, the dew point temperature is __________ wet bulb temperature.
[A].

equal to

[B].

less than

[C].

more than

Answer: Option B

Explanation:

No answer description available for this question.

For unsaturated air, the dew point temperature is __________ wet bulb temperature. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

Dry bulb temperature is the temperature of air recorded by a thermometer, when

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: Dry bulb temperature is the temperature of air recorded by a thermometer, when
[A].

it is not affected by the moisture present in the air

[B].

its bulb is surrounded by a wet cloth exposed to the air

[C].

the moisture present in it begins to condense

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Dry bulb temperature is the temperature of air recorded by a thermometer, when Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a saturated air-water vapour mixture, the

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a saturated air-water vapour mixture, the
[A].

dry bulb temperature is higher than wet bulb temperature

[B].

dew point temperature is lower than wet bulb temperature

[C].

dry bulb, wet bulb and dew point temperature are same

[D].

dry bulb temperature is higher than dew point temperature

Answer: Option C

Explanation:

No answer description available for this question.

In a saturated air-water vapour mixture, the Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning