090/2016

Maximum : 100 marks

Time : 1 hour and 15 minutes

1. A fan may be considered as a pump, because it :
(മ) looks like most other kind of pumps (18) മില fluids, like other pumps
(0) rotates (D) all of these

‰. If Nis the fan speed, then power of a fan is directly proportional to
A N ® N
© N யா

3. For rectangular ducts, the aspect ratio is equal to:
(A) sum of longer and shorter sides (B) difference of longer and shorter sides
(C) product of longer and shorter sides (D) ratio of longer and shorter sides

4. The alignment circle is marked on the psychrometric chart at :
(A) 20°CDBT and 50% RH (B) 26°C DBT and 50% RH
(C) 200 0087 ೩೧6 60% RH (D) 26°C DBT and 60% RH

5. र्ट प्र temperature of the surroundings is higher than the temperature of the body, then
the heat loss by convection from the body to the surroundings will be :

(A) positive (8) negative
(C) ௨௦ (D) none of these

6. 17 order to cool and dehumidify a stream of moist air, it must be passed over the coil at a
temperature :

(ക which lies between the dry bulb and wet bulb temperature of the incoming stream

(वि) which lies between the wet bulb and ‏عل‎ point temperature of the incoming
stream

(C) which is lower than the dew point temperature of the incoming stream

(D) of adiabatic saturation of incoming stream

7. The velocity of stream at the exit of the nozzle is :
(ക) supersonic (ए) sonic
(£) sub-sonic (D) none of these

ممع