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  • Question

  • The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)


  • Options
  • A. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the c
  • B. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the c
  • C. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the c
  • D. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the c

  • Correct Answer
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    • Thermodynamics problems

    Search Results

    • 1. The ultimate analysis of coal consists of the determination of the percentage of

    • Options
    • A. carbon
    • B. hydrogen and nitrogen
    • C. sulphur and ash
    • D. all of these
      • Discuss
    • 2. One kg of sulphur requires 1 kg of oxygen for complete combustion and produces 2 kg of sulphur dioxide.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as

    • Options
    • A. enthalpy
    • B. internal energy
    • C. entropy
    • D. external energy
      • Discuss
    • 4. Second law of thermodynamics defines

    • Options
    • A. heat
    • B. work
    • C. internal energy
    • D. entropy
      • Discuss
    • 5. Which of the following is the extensive property of a thermodynamic system?

    • Options
    • A. Pressure
    • B. Volume
    • C. Temperature
    • D. Density
      • Discuss
    • 6. The fuel mostly used in blast furnace for extracting pig iron from iron ores is

    • Options
    • A. hard coke
    • B. soft coke
    • C. pulverised coal
    • D. bituminous coal
      • Discuss
    • 7. The heating of a gas at constant pressure is governed by

    • Options
    • A. Boyle's law
    • B. Charles' law
    • C. Gay-Lussac law
    • D. Avogadro's law
      • Discuss
    • 8. One kilowatt is equal to

    • Options
    • A. 1 N-m/s
    • B. 100 N-m
    • C. 1000 N-m/s
    • D. 1 x 106 N-m/s
      • Discuss
    • 9. A closed cycle gas turbine works on Joule's cycle.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A machine which violates the first law of thermodynamics is known as perpetual motion machine of the second kind.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss

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