24,

25,

26,

27.

28.

29,

30,

31,

32,

Window AC for cooling mode can be easily converted to heating mode by installing
a:

(മ) TXV ൫ RCV
(9) കാസ്‌ (D) Solenoid valve

Approach of a cooling tower is defined as the :
(മ) Difference of DBT of surrounding air and temperature of water leaving the ‏نل‎

(8) Difference of temperature of water leaving the CT and temperature of entering
water

(C) Difference of temperature of water leaving the CT and WBT of surrounding air
(D) None of the above

Temporary hardness of water can be removed by :
(ಹ) வமண (8) chemical treatment
(ಲ) boiling (D) cooling

The cleaning efficiency of a fine filter is :
(ಹ) 99.9% (B) 100% (೧0 80% D) 70%

Which type of fan is used in electrical motors for internal cooling ?
(A) Backward inclined fan (B) Backward curved fan
(ಲ) Forward curved fan (D) Radial blade fan

Which senses the suction temperature in thermal electric expansion valve ?
(ಹಿ) Transformer (8) Thermalbulb (ಲ) Thermostat (D) Thermistor

Which run capacitor is used with 1.5 TR AC ?
(A) 36 mfd, 220/250 V (B) 80 mfd 220/250 V
(C) 36 mfd, 440/370 V (D) 80 mfd 440/370 V

The difference between the synchronous speed and the actual rotor speed is called :
(ಹ) Motorspeed (8) Slip speed (9) Actual speed (D) Field speed

The difference between the dry bulb temperature and wet bulb temperature is called :
(A) Dew point depression (B) Wet bulb depression
(ಲ) Dry bulb depression (D) Humidity

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