SSC JE Mechanical Engineering 27th Jan 2018 Shift-2
For the following questions answer them individually
The head loss in a sudden expansion from 6 cm diameter pipe to 12 cm diameterpipein termsof velocity v1 in the smaller diameterpipe is
(a) $$\frac{3}{16}.\frac{v_1^2}{2g}$$
(b) $$\frac{5}{16}.\frac{v_1^2}{2g}$$
(c) $$\frac{7}{16}.\frac{v_1^2}{2g}$$
(d) $$\frac{9}{16}.\frac{v_1^2}{2g}$$
The volute casing of ‘a centrifugal pump has which of the following functions?
1. Eliminating loss of head due to changein velocity after exit from impeller.
2. Directs the flow towards the delivery pipe.
3. Converts a part of the velocity head to pressure head.
4. Gives a constant velocity of flow.
Select the correct answer using the codes given below.
Match List I with List II and select the correct answer using the codes given below the lists.
Which one ofthe following statements is correct? While using boundary layer equations, Bernoulli's equation
