NEED HELP!!! When studying flow in a pipe (choose all that apply): Major losses

Question

NEED HELP!!!

When studying flow in a pipe (choose all that apply): Major losses are reduced by reducing pipe wall roughness Bernoulli's equation is always valid Major losses are always greater than minor losses Minor losses depend on the geometry of the pipe fittings Consider a laminar flow in a pipe. If the roughness of the pipe is increased, the friction coefficient. Increases Decreases Does not change Consider a laminar flow in a pipe. If the Reynolds number of the flow is increased, the friction coefficient Increases Decreases Does not change Consider a turbulent flow in a pipe (in fully rough zone). If the roughness of the pipe is increased, the friction coefficient Increases Decreases Does not change Consider a turbulent flow in a pipe (in fully rough zone). If the Reynolds number of the flow is increased, the friction coefficient Increases Decreases Does not change

Explanation / Answer

4 : b,c,d

5. C : Does not change

There is no effect of roughness in determining the friction factor in laminar regime

6. b : Decreses

Reynolds number and frictional coefficient are inversely propoetional

7 .A Increaes

The friction coefficient in rough pipes is function of roughness

8. C : Does not Chneg

Indpendent of Reynold number

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