Thermodynamics Questions

• An open cycle gas turbine works on
• Stirling cycle consists of
• According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.
• When a fluid is allowed to expand suddenly into a vaccum chamber through an orifice of large dimensions, the process is known as free expansion process.
• The efficiency of Carnot cycle depends upon
• The amount of heat required to raise the temperature of unit mass of a gas through one degree at constant pressure is called specific heat at constant pressure.
• The entropy is a point function and thus it is a property of the same.
• The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)
• In open cycle gas turbine plants
• The value of universal gas constant is same for all gases.
• One Joule (J) is equal to
• The amount of heat given out by the complete combustion of 1 kg of fuel is known as calorific value of solid or liquid fuel.
• The volumetric or molar specific heat at constant pressure is the product of
• The root mean square velocity of the gas molecules is given by (where k = Boltzmann's constant, T = Absolute temperature, and m = Mass of one molecule of a gas)
• The area under the temperature-entropy curve (i. e. T - s curve) of any thermodynamic process represents the workdone during the process.
• Mond gas is obtained by
• The heat and mechanical energies are mutually convertible. This statement was established by
• The change of entropy, when heat is removed from the gas, is negative.
• A triatomic molecule consists of __________ atoms.
• One molecule of oxygen consists of __________ atoms of oxygen.