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WorksheetsTHERMODYNAMICS
Total questions: 10
Worksheet time: 7mins
The first law of thermodynamics states that the change in the internal energy of a system is equal to the difference in energy transferred to or from the system as heat and ...........
A thermodynamic system where no exchange of heat takes place between system and surrounding is...
Isothermal process
Adiabatic process
Isobaric process
Isochoric process
Which of the following equations is the equation for calculating the work done by a gas in a piston?
W=Fd
W=PΔV
ΔV=Ad
A=πr2
For an isovolumetric process, which of the following statements is correct?
a. Work, heat, and internal energy all undergo changes.
b. Work and heat balance each other, so that there is no change in internal energy.
c. No energy is transferred as heat; internal energy change is due to work.
d. No work is done; internal energy change is due to heat.
For an isothermal process, which of the following statements is correct?
a. Work, heat, and internal energy all undergo changes.
d. No work is done; internal energy change is due to heat.
c. Work and heat balance each other, so that there is no change in internal energy.
d. No energy is transferred as heat; internal energy change is due to work.
Zeroth law of thermodynamics is:
Kinetic energy of molecules of a gas is zero
Ideal gas does not contain molecules
If two systems are thermal equilibrium third one is also in equilibrium
Absolute zero temperature cannot be obtained
The physics of the refrigerator closely resembles the
Ice formation
Heat engine
Vapour compression machin
vaporization of water
Why does heat engine cannot be 100% efficient?
Some of the steam cannot make the turbines to move.
The energy converted to mechanical energy is not enough.
It is because all heat is converted into work to perform its function.
It is because part of the heat input is utilized for the mechanical work and
some heat input cools down due to friction and for the cycle to happen.
Heat engine like in a geothermal power plant follows series of pattern in its operations. How will you arrange the following in correct sequence? I. Part of the heat is used to do mechanical work on an object. II. Condensed water is brought back to the Earth to repeat the cycle. III. Heat is supplied to the engine by an external source called hot reservoir. IV. Some of the heat decreases its temperature and condenses back to water.
I, II, III, IV
I, III, II, IV
III, II, IV, I
III, IV, I, II
The First Law of Thermodynamics refers to thermodynamics processes in which heat and work can be distinguished and measured.
False
True
