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Mechanical Engineering :: Thermodynamics

  1. The value of one bar (in S. I. units) is equal to

  2. A.

    1 x 102 N/m2

    B.

    1 x 103 N/m2

    C.

    1 x 104 N/m2

    D.

    1 x 105 N/m2

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  3. Petrol is distilled at

  4. A.

    65° to 220°C

    B.

    220° to 345°C

    C.

    345° to 470°C

    D.

    470° to 550°C

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  5. If the carbon content in the bituminous coal is 78 to 81%, it is said to be coking bituminous coal.

  6. A.

    Agree

    B.

    Disagree

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

  8. A.

    \(\frac { T_1 } { T_2 } - 1\)

    B.

    \(1 - \frac { T_1 } { T_2 }\)

    C.

    \(1 - \frac { T_2 } { T_1 } \)

    D.

    \(1 + \frac { T_2 } { T_1 } \)

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  9. The mass of excess air supplied is equal to

  10. A.

    \(\frac { 23 } { 100 } \times\)  Mass of excess carbon

    B.

    \(\frac { 23 } { 100 } \times\)  Mass of excess oxygen

    C.

    \(\frac { 100 }{ 23 } \times\)  Mass of excess carbon

    D.

    \(\frac { 100 }{ 23 } \times\) Mass of excess oxygen

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