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Home ‣ Mechanical Engineering ‣ Thermodynamics See What Others Are Saying!
  • Question

  • The change of entropy, when heat is removed from the gas, is positive.


  • Options
  • A. Yes
  • B. No

  • Correct Answer
  • No 

    • More questions

    • 1. The velocity of a body on reaching the ground from a height h, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. A drill mainly used in drilling brass, copper or softer materials, is

    • Options
    • A. flat drill
    • B. straight fluted drill
    • C. parallel shank twist drill
    • D. tapered shank twist drill
      • Discuss
    • 3. In the below figure, stress is proportional to strain, for the portion

    • Options
    • A. from O to A
    • B. from A to C
    • C. from A to D
    • D. from D to E
      • Discuss
    • 4. A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. The critical pressure ratio for initially wet steam is

    • Options
    • A. 0.546
    • B. 0.577
    • C. 0.582
    • D. 0.601
      • Discuss
    • 6. An open structure of a grinding wheel is used for

    • Options
    • A. soft materials
    • B. tough materials
    • C. ductile materials
    • D. all of these
      • Discuss
    • 7. Delta-iron occurs between the temperature range of

    • Options
    • A. 400°C to 600°C
    • B. 600°C to 900°C
    • C. 900°C to 1400°C
    • D. 1400°C to 1530°C
      • Discuss
    • 8. The D-Alembert's principle is used for changing the dynamic equilibrium of a fluid mass, into a static equilibrium.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 9. Cold working distorts grain structure and does not provide an appreciable reduction in size.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 10. The mass of flue gas per kg of fuel is the ratio of the

    • Options
    • A. mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel
    • B. mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas
    • C. mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel
    • D. mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas
      • Discuss

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