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

  • Boyle's law states that change of internal energy of a perfect gas is directly proportional to the change of temperature.


  • Options
  • A. Agree
  • B. Disagree

  • Correct Answer
  • Disagree 

    • More questions

    • 1. Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.

    • Options
    • A. two times
    • B. same
    • C. half
      • Discuss
    • 2. The __________ engines can work on very lean mixture of fuel.

    • Options
    • A. spark ignition
    • B. compression ignition
      • Discuss
    • 3. The maximum stress produced in a bar of tapering section is at

    • Options
    • A. smaller end
    • B. larger end
    • C. middle
    • D. anywhere
      • Discuss
    • 4. The lubrication oil flow in an engine is in the order as

    • Options
    • A. oil strainer - oil pump - relief valve - oil filter - cylinder block - cylinder head - oil pan
    • B. oil pump - oil strainer - relief valve - oil filter - cylinder block - cylinder head - oil pan
    • C. oil strainer - oil filter - relief valve - oil pump - cylinder block - cylinder head - oil pan
    • D. oil strainer - oil pump - relief valve - oil filter - cylinder head - cylinder block - oil pan
      • Discuss
    • 5. In submerged arc welding, an arc is produced between a

    • Options
    • A. carbon electrode and the work
    • B. metal electrode and the work
    • C. bare metal electrode and the work
    • D. two tungsten electrodes and the work
      • Discuss
    • 6. The metal suitable for bearings subjected to heavy loads, is

    • Options
    • A. silicon bronze
    • B. white metal
    • C. monel metal
    • D. phosphor bronze
      • Discuss
    • 7. In a screw jack, the effort required to lift the load is given by(where W = Load lifted, ? = Helix angle, and ? = Angle of friction.)

    • Options
    • A. P = W tan (? - ?)
    • B. P = W tan (? + ?)
    • C. P = W tan (? - ?)
    • D. P = W cos (? + ?)
      • Discuss
    • 8. The mass of carbon per kg of flue gas is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 9. A coarse grained steel

    • Options
    • A. is less tough and has a greater tendency to distort during heat treatment
    • B. is more ductile and has a less tendency to distort during heat treatment
    • C. is less tough and has a less tendency to distort during heat treatment
    • D. is more ductile and has a greater tendency to distort during heat treatment
      • Discuss
    • 10. In a ventilated disc brake,

    • Options
    • A. a duct directs air towards the caliper for cooling while the vehicle is moving
    • B. caliper is covered with cooling fins
    • C. disc contains many small holes for optimum cooling performance
    • D. disc contains radial vanes between its rubbing surfaces for optimum cooling performance
      • Discuss

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