##### Q1. The term V2/2g is known as

(a) kinetic energy
(b) pressure energy
(c) kinetic energy per unit weight
(d) none of the above.

Ans:  (c) kinetic energy per unit weight

##### Q2. The term p/ρg is known as

(a) kinetic energy per unit weight
(b) pressure energy
(c) pressure energy per unit weight
(d) none of the above.

Ans:  (c) pressure energy per unit weight

##### Q3. The term Z is known as

(a) potential energy
(b) pressure energy
(c) potential energy per unit weight
(d) none of the above.

Ans:  (c) potential energy per unit weight

##### Q4. If the density of a fluid changes from point to point in a flow region, it is called

(c) non-uniform flow
(d) compressible flow.

Ans:  (d) compressible flow

##### Q5. If the fluid particles move in straight lines and all the lines are parallel to the surface, the flow is called

(b) uniform
(c) compressible
(d) laminar.

Ans:  (d) laminar.

##### Q6. If the fluid particles move in a zigzag way, the flow is called

(b) non-uniform
(c) turbulent
(d) incompressible.

Ans:  (c) turbulent

##### Q7. The flow rate through a circular pipe is measured by

(a) Pitot-tube
(b) Venturi-meter
(c) Orifice-meter
(d) None of the above.

Ans:  (b) Venturi-meter
(c) Orifice-meter

##### Q8. If the velocity, pressure, density etc., do not change at a point with respect to time, the flow is called

(a) uniform
(b) incompressible
(c) non-uniform

##### Q9. If the velocity, pressure, density etc., change at a point with respect to time, the flow is called

(a) uniform
(b) compressible
(d) incompressible.

##### Q10. The relation between tangential velocity (v) and radius (r) is given by

(a) V × r = constant for forced vortex
(b) V/r = constant for forced vortex
(c) V × r = constant for free vortex
(d) V/r = constant for free vortex.

Ans:  (b) V/r = constant for forced vortex

(c) V × r = constant for free vortex

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Hydraulics and Fluid mechanics MCQ-Section-1

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