MCQ AIR CONDITIONING

MCQ AIR CONDITIONING

MCQ makes understanding full. It also

increases the level of clarity. Air

conditioning is simultaneous control

of temperature, humidity, purity and

velocity. Comfort and industrial air

conditioning are two types of air

conditioning. Industrial air conditioning

improves the quality and quantity of a

product. Comfort air conditioning

increases the efficiency of human beings.

  1. Air conditioning means control of

  1. Temperature and velocity

  2. Humidity and purity

  3. Both (a) & (b)

  4. None

ANS: (c )

  1. Types of air conditioning are

    1. Summer air conditioning

    2. Winter air conditioning

    3. Year round air conditioning

    4. None

ANS: (d)

  1. Types of air conditioning are

    1. Comfort air conditioning

    2. Industrial air conditioning

    3. Both (a) & (b)

    4. None

ANS: (c )

  1. Summer air conditioning means

    1. Cooling & humidification

    2. Cooling & dehumidification

    3. Both (a) & (b)

    4. None

ANS: (b)

  1. Winter air conditioning means

    1. Cooling and humidification

    2. Heating & dehumidification

    3. Heating and humidification

    4. None

ANS: (c )

  1. In comfort air conditioning

    1. Total room air recirculates

    2. Total fresh air circulates

    3. 50-50 room and fresh air circulates

    4. None

ANS: (d)

  1. In comfort air conditioning, room air and ventilation air are in the ratio

    1. 80 : 20

    2. 60 : 40

    3. 40:60

    4. None

ANS: (a)

  1. In comfort air conditioning, room air

    1. Alone is cooled & then mixed with ventilation air

    2. Is mixed with ventilation air & then cooled

    3. Both (a) & (b)

    4. None

ANS: (c )

  1. In operation theatres of comfort air conditioning, the ratio of room air and ventilation air is

    1. 100 : 0

    2. 0:100

    3. 50 : 50

    4. NONE

ANS: (b)

  1. Inside design conditions for comfort air conditioning are

    1. 200C & 80 % RH

    2. 240C & 100 % RH

    3. 20-240C & 90 % RH

    4. None

ANS: (d)

  1. Inside design conditions for comfort air conditioning are

    1. 20-240C & 80 % RH

    2. 24-280C & 100 % RH

    3. 22-270C & 40-60 % RH

    4. None

ANS: (c)

  1. In air conditioning, types of loads added are

    1. Sensible heat loads

    2. Latent heat loads

    3. Both (a) & (b)

    4. None

ANS: (c)

13. In comfort air conditioning, which load is more comes from the occupants

  1. Sensible heat load

  2. Latent heat load

  3. Both (a) & (b)

  4. None

ANS: (b)

  1. Outside design conditions in comfort air conditioning are

    1. Constant

    2. Variable

    3. Can’t say

    4. None

ANS: (b)

  1. In order to achieve dehumidification, it is essential to decrease the temperature of air

    1. Below wet bulb temperature

    2. Dew point temperature

    3. Below dry bulb temperature

    4. None

ANS: (b)

  1. For heating & humidification of air, it is passed through

    1. Water spray & then heated

    2. Hot water spray

    3. Over the heated surface

    4. None

ANS: (b)

  1. The air conditioning used for winter air conditioning is

    1. Refrigerator

    2. Heat engine

    3. Heat pump

    4. None

ANS: (c)

  1. The refrigerant used in car air conditioning is

    1. Ammonia

    2. R-134a

    3. R-22

    4. None

ANS: (b)

  1. Fan coil unit is used in air conditioning of a

    1. Room

    2. Auditorium

                  © Both (a) & (b)

                d. None

ANS: (a)

  1. Air handling unit is used in the air conditioning of a

(a) Room

(b) Auditorium

© Both (a) and (b)

 (d) None

ANS: (b)

20. Fan coil unit is used in a

    1. Window air conditioner

    2. Split air conditioner

    3. Both (a) & (b)

    4. None

ANS: (c)

    21. Ducts are used with

    1. Window air conditioner

    2. Split air conditioner

    3. Both (a) & (b)

    4. None

ANS: (d)

    22. Ducts used in air conditioning are made of

  1. Copper

  2. GI steel

  3. Wood

  4. None

ANS: (b)

    23. The best shape of ducts in air conditioning is

  1. Round

  2. Rectangular

  3. Square

  4. None

ANS: (a)

    24. Condensers in central air conditioning plants are

  1. Air cooled

  2. Water cooled

  3. Evaporative cooled

  4. None

ANS: (c)

    25. Condensers in window air conditioner are

  1. Air cooled

  2. Water cooled

  3. Evaporative cooled

  4. None

ANS: (a)

    26. Condensers in air conditioning of auditoriums are

  1. Air cooled

  2. Water cooled

  3. Evaporative cooled

  4. None

ANS: (b)