Both first law efficiency and second law efficiency indicate how effectively the input has been converted into the product.

Related MCQs

• Consider the following statements: The definition of 1. temperature is due to zeroth law of thermodynamics 2. entropy is due to first law of thermodynamics 3. internal energy is due to second law of thermodynamics 4. reversibility is due to Kelvin-Planck's ststement of these statements
• The first law efficiency is defined as the ratio of the output energy to the input energy.
• Second law efficiency can also be given as
• Second law efficiency is defined as
• For a power plant, second law efficiency can be given by desired output(W) / available energy(Wmax).
• In case of a heat pump, second law efficiency is given as
• For proper utilization of exergy, it is desirable to make first law efficiency           and the source and use temperatures should
• During a polytropic expansion 25% of heat is converted into work while temperature of gas rises by 30 K, the specific heat of gas at constant volume is
• During a constant pressure expansion of a gas 33.3 % heat is converted into work while the temperature rises by 20K. The specific heat of gas at constant pressure is
• In an constant pressure heating certain fraction of heat supplied is converted into work. If ?=1.4 this fraction is