What is the correct answer?


COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about

A. 0.5

B. 3.5

C. 4.5

D. 8.5

Correct Answer :

B. 3.5

Related Questions

If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole… The difference between isothermal compressibility and adiabatic compressibility… A refrigeration cycle is the same as a __________ cycle, The chemical potential of any constituent of an ideal solution depends… The second law of thermodynamics states that Clausius-Clapeyron equation is applicable to __________ equilibrium processes. Compressibility factor for almost all the gases are approximately same… The rate at which a substance reacts is proportional to its active mass… The number of degrees of freedom at the triple point of water is The acentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr-1… __________ decreases during adiabatic throttling of a perfect gas. Work done is a Chemical potential of ith component of a system is given by The energy of activation of exothermic reaction is Specific volume of an ideal gas is Pick out the correct statement. (∂E/∂T)V is the mathematical expression for Which of the following is not correct for a reversible adiabatic process? Forward reaction will be favoured for the exothermic reaction, represented… The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its… If the heat of solution of an ideal gas in a liquid is negative, then… Which of the following is not a reversible process? A system undergoes a change from a given initial state to a given final… What is the value of ln y (where y = activity co-efficient) for ideal… In the reaction; N2 + O2 2NO, increasing the pressure will result in Gibbs free energy at constant pressure and temperature under equilibrium… Mollier chart is a __________ plot. The efficiency of a Carnot heat engine operating between absolute temperatures… Consider the reaction, C + O2 CO2; ΔH = - 94 kcal. What will be the… Tea kept in a thermos flask is vigorously shaken. If the tea is considered…