The available energy is known as          and the unavailable energy is known as          

Related MCQs

• The unavailable energy is the product of the lowest temperature of heat rejection and the change of entropy of system during the process of supplying heat.
• If solar energy Qr is available at a reservoir storage temperature of Tr and if quantity of heat Qa is transferred by the solar collector at temperature Ta, then which of the following is true?
• For a power plant, second law efficiency can be given by desired output(W) / available energy(Wmax).
• The first law efficiency is defined as the ratio of the output energy to the input energy.
• In a reversible cycle, the source temperature is 227°C & the sink temperature is 27°C. The maximum available work for a heat input of 100 kJ will be
• The part of          available for conversion is referred to          
• With the concept of exergy available, which of the following is possible?
• In an ideal gas there are no intermolecular forces of attraction and repulsion, and the internal energy is a function of temperature only.
• Mass and energy are conserved quantities, but entropy is generally not conserved.
• The fact that internal energy of a mixture is equal to the sum of the partial internal energies of the gases can also be applied to properties like H,Cv,Cp,S,F, and G.