SSC JE Mechanical Engineering 2018 Set 3 Paper

Question : 179 of 200

Marks: +1, -0

The loss of head due to sudden contraction is equal to

Solution:

Loss of head due to sudden contraction

=v_2^2/{2g}[ (A_2/A_1)-1]^2

=v_2^2/{2g}[ (1/C_c-1)]^2

let C

_c

= 0.62, K =

(1/.62-1)^2=0.375

[H_2=0.375v_2^2/{2g}]

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