A refrigerator is to maintain eatables kept inside at `9^(@)C`. If room temperature is `36^(@)C`, calculate the coefficient of performance.

A refrigerator is maintained (stabilizer kept inside) at 9^(@)C . If room temperature is 36^(@)C , calculate the coefficient of performance.

A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2A which settles after a few seconds to a steady value of 2.8A. What is the stready temperature of the heating element if the room temperature is 27^@C ? Temperature coefficient of resistance of nichrome averages over the temperature range involved is 1.70times10^(-4^@)C^-1 .

The temperature of the ice-box of a refrigerator is -7^(@)C and the room temperature is 31^(@)C . To maintain the temperature of the ice-box, the refrigerator approximates a Carnot refrigerator, what is its power consumption?

A heating element using nichrome connected to a 230V supply draws an inital current of 3.2A which settles after a few seconds to a steady value of 2.8A. What is the steady temperature of the heating eleipent if the room temperature is 27.0^@C ? Temperature coefficient of resistivity of nichrome averaged over the temperature range involved is 1.70xx l0^(-4)//C^@ .

If coefficient of performance of a refrigerator is 5 and it operates at the room temperature (27^(@)C) , find the temperature inside the refrigerator.

1 g water has a volume of 1 cm^(3) at 4^(@)C . Its volume at 60^(@)C is 1.0169cm^(3) . Calculate the average coefficient of real expansion of water between these two temperatures.

The coefficient of volume expansion of a liquid is gamma and its density at 0^(@)C is rho . If the temperature is increased to t^(@)C then the change in density will be

The activation energy of most of the reactions occurring at 25^(@)C is generally 50"kJ.mol"^(-1) . Calculate the temperature coefficient of such reactions.