Mechanical Engineering - Thermodynamics

6.
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
isothermal process
hyperbolic process
adiabatic process
polytropic process
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Which of the following statement is correct according to Clausis statement of second law off thermodynamics?
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.
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.
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.
none of the above
Answer: Option
Explanation:
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8.
Diesel cycle consists of __________ processes.
two constant volume and two isentropic
two constant pressure and two isentropic
two constant volume and two isothermal
one constant pressure, one constant volume and two isentropic
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called
wood charcoal
bituminous coal
briquetted coal
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The process is adiabatic, if the value of n in the equation pvn = C, is
0
1
γ
Answer: Option
Explanation:
No answer description is available. Let's discuss.