Question Set 116

1. A hollow shaft of same cross-section area as solid shaft transmits

· Same torque

· Less torque

· More torque

· Unpredictable

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2. In a cantilever beam, maximum deflection occurs at where

· Bending moment is zero

· Bending moment is maximum

· Shear force is zero

· Slope is zero

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3. In a rectangular beam, when width, depth and length are doubled, the bending stress will be

· Shall remain unchanged

· Shall be doubled

· Shall become ¼ th

· Shall be halved

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4. In an I –section beam, the bending moment is resisted mainly by

· Flanges only

· Web only

· Both by flanges and web

· None of the above

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5. Strain energy is the

· Energy stored in a body when strained within elastic limits

· Energy stored in a body when strained up to the breaking of a specimen

· Maximum strain energy which can be stored in a body

· Proof resilience per unit volume of a material

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6. The neutral axis of the cross-section a beam is that axis at which the bending stress is

· Zero

· Minimum

· maximum

· Infinity

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7. Euler’s formula holds good only for

· Short columns

· Long columns

· Both short & long columns

· Weak columns

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8. A steel bar of 5 mm is heated from 15° C to 40° C and it is free to expand. The bar Will induce

· No Stress

· Shear Stress

· Tensile Stress

· Compressive Stress

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9. The stress induced in a body, when suddenly loaded, is __________ the stress induced when the same load is applied gradually.

· Equal to

· One-half

· Twice

· Four times

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10. A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The maximum normal stress will be (See Solutions)

· 400 MPa

· 500 MPa

· 900 MPa

· 1400 MPa