OC userin Engineering·8 Feb 2019Read the statements given below and determine which of the following statements violates the first law of thermodynamics? It is possible to extract unlimited work from a machine without any source of energy. The energy in a system always remains conserve The entropy of the universe can never decrease None of these
OC userin Engineering·20 Mar 2019What is ΔG0 in thermodynamics system? How is it related to ΔH0 and ΔS0 in thermodynamics systems?
OC userin Engineering·14 Jun 2019 Among the following statements, which statement finds the logical consequence of the second law of thermodynamics? This law states that the entropy of an isolated system always increases or equal to zero but can never decrease This law is a relationship between the energy and the internal energy of a system This law states that entropy attains a constant value at absolute zero temperature This law states enthalpy of a closed system is a point function
OC userin Engineering·9 Apr 2019Choose the correct statement in relation to the first law of thermodynamics. This law states that the entropy of a system at absolute zero temperature remains zero This law states that energy always remains conserved This law states that the entropy of a system depends upon temperature and pressure conditions This law states that a machine can work continuously with 100 % output.
OC userin Engineering·27 Sep 2019Choose the correct statement that supports the second law of thermodynamics. The second law of thermodynamics is a principle that demonstrates the conservation of energy The second law states that energy always degrades quality-wise According to this, the entropy of an isolated system may decrease or increase This law states that the flow of energy can take place in any direction naturally
OC userin Engineering·5 Feb 2019Consider a sound wave of 320 Hz frequency is traveling with a speed of 320 m/sec. Determine the wavelength of the sound wave.
OC userin Engineering·3 Jul 2019Among the following statement, which can be a possible statement for the second law of thermodynamics? All the natural processes are the reversible process The energy always remains conserve The entropy of the universe can never decrease Heat transfer from a body at low temperature to a body at high temperature is possible naturally
OC userin Engineering·6 Jul 2019Which law of thermodynamics states that energy is conserved in all chemical processes?
OC userin Engineering·7 Jun 2019Explain why the second law of thermodynamics is considered as the directional law of heat transfer?
OC userin Engineering·15 Aug 2019What will happen when a fixed amount of gas goes through an isobaric expansion? There will not be any transfer The pressure of the gas will change There must be an increase in temperature There will not be any work done
OC userin Engineering·29 Sep 2019Which of the following statements is correct about stress in engineering? The SI unit of stress is Newton It is the internal force expressed per unit area of a body The normal stress is coplanar with the area of cross-section None of these
OC userin Engineering·8 May 2019If we take a liter of hot water filled in a pot at room temperature then which pot will cool it faster? It depends on the size and material of the pot It will cool faster in silver-colored pot It will cool faster in black-colored pot It will depend upon the material of pot, size, and color
OC userin Engineering·20 Feb 2019What is the difference between a radio wave and a light wave? How does a light wave differ from an X-ray?
OC userin Engineering·30 Apr 2019What will be the amount of net force when an object is falling down with constant velocity?