Thermodynamics Questions

• One molecule of oxygen is __________ times heavier than the hydrogen atom.
• To ensure complete and rapid combustion of a fuel, some quantity of air, in excess of the theoretical or minimum air is supplied.
• According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.
• Kerosene is distilled at
• High air-fuel ratio in gas turbines
• If in the equation pvn = C, the value of n = ∝ , then the process is called
• The efficiency of the dual combustion cycle for the same compression ratio, is __________ Diesel cycle.
• The mass of flue gas per kg of fuel is the ratio of the
• A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.
• The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is
• First law of thermodynamics deals with
• The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)
• It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
• When gas is heated at constant pressure, the heat supplied is utilised in
• Both the Ericsson and Joule's cycle have two constant pressure processes.
• The atomic mass of sulphur is
• When the gas is heated at constant pressure, the heat supplied
• It is __________ to make an engine working on a Carnot cycle.
• If the carbon content in the bituminous coal is 78 to 81%, it is said to be coking bituminous coal.
• The mass of carbon per kg of flue gas is given by