This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Simple Steam Power Cycle and Rankine Cycle”. 1. A power cycle continuously converts ____ into ____ a) heat, heat b) work, heat c) heat, work d) work, work 2. In the vapour power cycle, working fluid undergoes a change of phase. a) true … Read more
This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Types of Equilibrium”. 1. For an isolated system, a) dS<0 b) dS>0 c) dS=0 d) none of the mentioned 2. The entropy of an isolated system always ____ and reaches ____ when equilibrium is reached. a) remains constant, maximum b) decreases, minimum c) … Read more
This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Mixtures of Variable Composition”. 1. For a system of variable composition, the internal energy depends on a) entropy b) volume c) moles d) all of the mentioned 2. If the composition of system does not change, then dU=TdS-pdV . a) true b) false … Read more
This set of tricky Thermodynamics questions and answers focuses on “Evaluation of Thermodynamic Properties from an Equation of State”. 1. An equation of state can also be used to calculate internal energy, enthalpy and entropy. a) true b) false 2. The changes in properties like T,p and v a) depend on the path taken b) … Read more
This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Clausius-Clapeyron Equation”. 1. During phase transitions like vaporization, melting and sublimation a) pressure and temperature remains constant b) volume and entropy changes c) both of the mentioned d) none of the mentioned 2. Which of the following requirement is satisfied by a phase … Read more
This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Joule-Kelvin Effect”. 1. When a gas undergoes continuous throttling process by a valve and its pressure and temperature are plotted, then we get a a) isotherm b) isenthalpe c) adiabatic d) isobar 2. A family of isenthalpes can be obtained for the gas. … Read more
This set of Advanced Thermodynamics Questions & Answers focuses on “Energy Equation-3”. 1. Superheated R-134a at 0.5 MPa, 20°C is cooled in a piston-cylinder at constant temperature to a final two-phase state with quality of 50%. The refrigerant mass is 5 kg, and during the process 500 kJ of heat is removed. Find the necessary … Read more
This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Energy Equation-2”. 1. A 100L rigid tank contains nitrogen at 3 MPa, 900 K. The tank is then cooled to 100 K. What is the heat transfer for this process? a) −490.7 kJ b) −590.7 kJ c) −690.7 kJ d) −790.7 kJ 2. … Read more
This set of Thermodynamics Multiple Choice Questions & Answers (MCQs) focuses on “Energy Equation-1”. 1. For a system which undergoes an infinitesimal reversible process between two equilibrium states, the change in internal energy is a) dU = pdV – TdS b) dU = TdS + pdV c) dU = TdS – pdV d) dU = … Read more
This set of Basic Thermodynamics questions and answers focuses on “Difference in Heat Capacities and their Ratio”. 1. What do we get on equating the first and second TdS equations? a) Cp-Cv = T*(∂T/∂p)*(∂V/∂T) b) Cp-Cv = T*(∂p/∂T)*(∂V/∂T) c) Cp+Cv = T*(∂p/∂T)*(∂V/∂T) d) none of the mentioned 2. Consider the equation Cp-Cv = -T*(∂p/∂V)(∂V/∂T)2 , … Read more
