The losses due to sudden contraction are expressed by A. \frac{v_1^2-v_2^2}{2g} B. \frac{v_2^2-v_1^2}{2g} C. \frac{(v_1 -v_2)^2 }{ g} D. \frac{(v_1 -v_2)^2 }{2g}

Correct Answer is : None of these

SSC JE Mechanical Engineering 2018 Set 4 Paper

Question : 171 of 200

Marks: +1, -0

The losses due to sudden contraction are expressed by
A.

{v_1^2-v_2^2}/{2g}

{v_2^2-v_1^2}/{2g}

{(v_1 -v_2)^2 }/{ g}

{(v_1 -v_2)^2 }/{2g}

Solution:

The head loss due to sudden contraction equationis :

hc=k(V_2^2/{2g})

Where

k=((1/C_C)-1) ^2

_2

is the velocity at section 2.

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