Top 350+ Solved Thermodynamics MCQ Questions Answer
Q. An isolated system
a. Is a specified regon where transfers of energy and/or mass takes place
b. Is a region of constant mass and only energy is allowed to cross the boundaries
c. Cannot transfer either energy or mass to or from the surroundings
d. Is one in which mass within the system is not necessarily constant
e. None of the above
Q. If during a process, the entropy of the isolated system increases, the process is
a. Adiabatic
b. Irreversible
c. Reversible
d. Ideal
e. Isothermal
Q. A constant volume gas thermometer closely follows
a. Boyle's law
b. Charle's law
c. Gay Lussac's law
d. None of the above
e. Pulsejet
Q. In a thermal power plant thermodynamic cycle used is
a. Joule
b. Brayton
c. Carnot
d. Erricson
e. Rankine
Q. According to Boyle's law PV = C when the temperature is constant. In this relation the magnitude of C depends upon
a. Pulsejet
b. atmospheric pressure
c. atomicity of the gas
d. quantity of the gas involved
e. molecular weight of the gas
Q. On a Mollier chart the flow through turbine is represented by
a. Horizontal line
b. Vertical line
c. Curved line convex up
d. Carved line convex down
e. None of the above
Q. Which of the following turbines cannot be set below the maximum tail race level
a. Kaplan
b. Pelton
c. Francis
d. Propeller
e. Energyless process
Q. The fact that the product of pressure and volume of a fixed amount of gas is of approximately constant value is known as
a. Dalton's law
b. None of these
c. Gay Lussac's law
d. Charle's law
e. Lewis law
Q. Steady state heat transfer occurs when
a. The flow of heat is uniformly decreasing
b. The flow of heat is uniform
c. The flow of heat is independent of time
d. The flow of heat is negligible
e. The flow of heat is uniformly increasing
Q. "It is impossible to construct a heat engine which operates in a cycle and receives a given amount of heat from a high temperature body and does equal amount of work". Which of the following name is associated with the above statement?
a. Gay Lussac
b. Kinetic theory
c. Kelvin-planck
d. Joule-thomson
e. None of the above
Q. For a reversible adiabatic process the change in entropy is
a. Unity
b. Zero
c. Maximum
d. Minimum
e. Infinite
Q. Whenever a system undergoes either a change in state or an energy or mass transfer at a steady state, it is said to undergo
a. A steady state transfer
b. A thermodynamic change
c. An equilibrium
d. A process
e. A change of state
Q. In case the thermal efficiency of an engine becomes 100% it will violate
a. Zeroth law of thermodynamics
b. First law of thermodynamics
c. Second law of thermodynamics
d. Third law of thermodynamics
e. None of the above