Online Mechanical Engineering Test - Thermodynamics Test
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- Total number of questions: 20.
- Time allotted: 30 minutes.
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An adiabatic process is one in which
When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
Which of the following is the correct statement of the second law of thermodynamics?
The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Charles' law.
In an isothermal process,
The heat absorbed during a polytropic process is
Liquid fuels have higher calorific value than solid fuels.
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.
When a gas is heated at constant volume
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.
One molecule of oxygen consists of __________ atoms of oxygen.
One kg of carbon monoxide requires 4/7 kg of oxygen and produces
The polytropic index (n) is given by
The entropy may be expressed as a function of
The bomb calorimeter is used for finding the __________ calorific value of solid and liquid fuels.
When the gas is heated at constant pressure, the heat supplied
The mass of carbon per kg of flue gas is given by
The mass of excess air supplied is equal to
A cycle consisting of two constant pressure and two isothermal processes is known as Ericsson cycle.
A molecule consisting of one atom is known as
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