In a pre-stressed beam carrying an external load W with a bent tendon is having angle of inclination θ and pre-stressed load P. The net downward load at the centre is

A. W - 2P cosθ

B. W - P cosθ

C. W - P sinθ

D. W - 2P sinθ

Answer: Option D

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If the shear stress in a R.C.C. beam is

A. Equal or less than 5 kg/cm2, no shear reinforcement is provided

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D. All the above