Related Questions

The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.
A Refrigerant cooling
B Evaporator
C Condenser
D Throttling
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.
A Same
B Less
C More
D None of these
One fourth the price of a TV is equal to 1/6th the price of a refrigerator. If the total cost of the TV and the refrigerator is Tk 60000, what is the price of the TV?
A Tk 22000
B Tk 24000
C Tk 27500
D None of these
The diameters of fire tubes and superheater tubes in locomotive boiler are
A 47.5 mm, 130 mm
B 32.5 mm, 180 mm
C 65.5 mm, 210 mm
D 24.5 mm, 65 mm
Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its
A High co-efficient of thermal expansion
B Low thermal conductivity
C High corrosion resistance
D All of the above
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
A Are easier to clean
B Are less prone to fouling
C Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D None of these
In a domestic vapour compression refrigerator, the refrigerant commonly used is
A CO2
B Ammonia
C R-12
D All of these
Domestic refrigerator usually works on the __________ refrigeration cycle.
A Carnot
B Air
C Absorption
D Vapour-ejection
The common refrigerant in domestic refrigerator is
A Neon
B Oxygen
C Nitrogen
D Freon
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the
A Expansion valve to the evaporator
B Evaporator to the thermostat
C Condenser to the expansion valve
D Condenser to the evaporator

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