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Mechanical Engineering :: Engineering Mechanics

Engineering Mechanics - Section 1
Engineering Mechanics - Section 2
Engineering Mechanics - Section 3
Engineering Mechanics - Section 4
Engineering Mechanics - Section 5
Engineering Mechanics - Section 6
Engineering Mechanics - Section 7

  1. Which of the following statement is correct?

    2. A.

    The kinetic energy of a body during impact remains constant.
    B.

    The kinetic energy of a body before impact is equal to the kinetic energy of a body after impact.
    C.

    The kinetic energy of a body before impact is less than the kinetic energy of a body after impact.
    D.

    The kinetic energy of a body before impact is more than the kinetic energy of a body after impact.

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  2. The maximum efficiency of a screw jack is

    3. A.

    \(\frac { 1 - sin\phi } { 1 + sin\phi } \)
    B.

    \(\frac { 1 + sin\phi } { 1 - sin\phi } \)
    C.

    \(\frac { 1 - tan\phi } { 1 + tan\phi } \)
    D.

    \(\frac { 1 + tan\phi } { 1 - tan\phi } \)

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  3. In a framed structure, as shown in the below figure, the force in the member AC is numerically equal to the force in member BC.

    4. A.

    Correct
    B.

    Incorrect

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  4. The force which acts along the radius of a circle and directed towards the centre of the circle is known as centripetal force.

    5. A.

    True
    B.

    False

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  5. Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

    6. A.

    bh3/4
    B.

    bh3/8
    C.

    bh3/ 12
    D.

    bh3/ 36

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