Test: Comfort Conditions - 1 - Mechanical Engineering MCQ

Temperature of air

Humidity of air

Air conditioning unit

Purity of air

20°C DBT and 50% RH 

26°C DBT and 0% RH

20°C DBT and 60% RH

26°C DBT and 60% RH

positive

negative

zero

either zero or negat

mean radiant temperature

effective temperature

dew point temperature

solar temperature

45 W

20 W

60 W

70 W

30%

40%

50%

60%

higher in winter than in summer

lower in winter than in summer

same in winter and summer

not dependent on season

Effective temperature is the index which correlates the combined effect of air dry bulb temperature, air humidity and air movement upon human comfort.

The value of effective temperature is same for human comfort both in summer and winter.

The values of effective temperature and wet bulb temperature are same.

For human comfort, the value of effective temperature is higher in winter than that in summer.

temperature only

temperature and air motion

temperature and relative humidity

relative humidity and air motion

heat dissipated to surroundings

heat stored in the body

difference between heat dissipated to surroundings and heat stored in the body

sum of heat dissipated to surroundings and heat stored in the body