Mechanical Thermodynamics Quiz - Set 02

Thermodynamics Online Quiz: Set - 02


1. The property of the system, whose value for the entire system is equal to the sum of their values for the individual parts of the system, is called extensive property.
Yes
No

2. A process, in which the gas is heated or expanded in such a way that product of its pressure and volume remains constant, is called isothermal process.
Yes
No

3. A perpetual motion machine of the first kind is _________ according to first law of thermodynamics.
Possible
Impossible

4. Wood charcoal is produced by heating the wood at 100°C.
Yes
No

5. The amount of heat obtained by the complete combustion of 1 kg of a fuel when the products of its combustion are cooled down to the temperature of supplied air is called _________ calorific value of fuel.
Higher
Lower

6. When a fluid is allowed to expand suddenly into a vacuum chamber through an orifice of large dimensions, the process is known as free expansion process.
True
False

7. Water gas is obtained by passing air and a large amount of steam over waste coal at about 650°C.
Correct
Incorrect

8. The dual combustion cycle consists of one constant pressure, two constant volume and two isentropic processes.
Agree
Disagree

9. The free expansion process is a constant enthalpy process.
Correct
Incorrect

10. The blast furnace gas is a by-product in the production of pig iron in the blast furnace.
Yes
No

11. If the carbon content in the bituminous coal is 78 to 81%, it is said to be coking bituminous coal.
Agree
Disagree

12. The bomb calorimeter is used for finding the _________ calorific value of solid and liquid fuels.
Higher
Lower

13. The atomic mass of an element is the number of times the atom of that element is heavier than the hydrogen atom.
True
False

14. The area under the temperature-entropy curve (i.e. T - s curve) of any thermodynamic process represents the work-done during the process.
Agree
Disagree

15. As per Charles' law, the volume of a given mass of a perfect gas varies _________ as its absolute temperature, when the absolute pressure remains constant.
Directly
Indirectly

16. Boyle's law states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
Agree
Disagree

17. The efficiency of Otto cycle depends upon the specific heats of the working substance.
Yes
No

18. It is ________ to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.
Possible
Impossible

19. Briquetted coal is produced from the finely ground coal by moulding under pressure with or without a binding material.
True
False

20. 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 Boyle's law.
Yes
No

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