Correct Answer is : the ratio of moisture present in air to the capability of air to hold maximum moisture

something concerned with air conditioning

the ratio of moisture present in air to the capability of air to hold maximum moisture

the ratio of actual humidity to absolute humidity

representative of amount of moisture held in air

SSC JE Mechanical Engineering 2017 Set 4 Paper

Question : 179 of 200

Marks: +1, -0

Relative humidity is

something concerned with air conditioning
the ratio of moisture present in air to the capability of air to hold maximum moisture
the ratio of actual humidity to absolute humidity
representative of amount of moisture held in air

Solution:

Relative humidty (ϕ)

=m_v/m_{v_s}

m_v =

mass of moisture present in air

m_{v_s}=

mass of moisture in saturated condition

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