1. Comfortable zone of temperature for human being.
(A) 25-30 °C
(B) 10-15 °C
(C) 15-25 °C
(D) 30-45 °C
2. Heat transfers through
(A) Conduction
(B) Convection
(C) Radiation
(D) All of these
3. The most thermal resisting material.
(A) Wood
(B) Glass
(C) Brick masonry
(D) Marble
4. The most thermal resisting material.
(A) Concrete
(B) Plaster
(C) Cork
(D) Asphalt
5. Entering and exit of natural or conditioned air in the building
(A) Air conditioning
(B) Ventilation
(C) Aeration
(D) All of these
6. Air conditioning system suitable for large buildings
(A) Unit air conditioning
(B) Split air conditioner
(C) Anyone
(D) Central system
7. Conduction of heat through wood depends upon
(A) Porosity
(B) Moisture content
(C) All of these
(D) Bulk density
8. Installation of exhaust fan in bathroom is called
(A) Natural ventilation
(B) None of these
(C) Artificial ventilation
(D) Mechanical ventilation
9. Artificial ventilation is
(A) Exhaust fan
(B) Pushing fan
(C) Suction
(D) All of these
10. Filter used in Air conditioning to remove bacteria
(A) Dry filter
(B) Ozoning filter
(C) Electric filter
(D) Viscous filter
11. It is necessary to keep ______ in an air conditioning system
(A) Control of temperature
(B) All of these
(C) Dryness
(D) Direction of air
12. Humidity required at the temperature of 15 to 25 °C
(A) 10-20 %
(B) 20-30 %
(C) 40-70 %
(D) 30-40 %