For pipes that must be broken at intervals for maintenance, the connector used should be a/an__________________?

Related Mcqs:

1. A pipe of I.D. 4 m is bifurcated into two pipes of I.D. 2 m each. If the average velocity of water flowing through the main pipe is 5 m/sec, the average velocity through the bifurcated pipes is__________________?

   A. 20 m/sec
   B. 10 m/sec
   C. 5 √2 m/sec
   D. 5 m/sec

2. Bernoulli‟s equation does not apply to the functioning of a/an__________________?

   A. Venturimeter
   B. Orificemeter
   C. pitot tube
   D. None of these

3. Small pressure differences in liquids is measured using a/an__________________?

   A. U-tube manometer
   B. Inclined tube manometer
   C. Pitot tube
   D. None of these

4. Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton’s law of viscosity. (II) Newton’s second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary?

   A. I, II, III
   B. II, III, V
   C. I, II, V
   D. II, IV, V

5. Maintenance cost of a ______________ pump for a particular duty is the least?

   A. Centrifugal
   B. Reciprocating
   C. Volute
   D. Gear

6. In the complete turbulence zone (in rough pipes), the____________________?

   A. Rough and smooth pipes have the same friction factor
   B. Laminar film covers the roughness projections
   C. Friction factor depends upon NRe only
   D. Friction factor is independent of the relative roughness

7. Glass pipes can be joined by__________________?

   A. Flanges
   B. Welding
   C. Soldering
   D. Bell and spigot joint

8. In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of___________________?

   A. Relative roughness
   B. Absolute roughness
   C. Friction co-efficient for flows at equal Reynold number
   D. All A., B. & C.

9. Pipes having diameter 14 inches or more are designated by their_________________?

   A. Outside diameter
   B. Inside diameter
   C. Schedule number
   D. None of these

10. During ageing of fluid carrying pipes, the__________________?

    A. Pipe becomes smoother with use
    B. Friction factor increases linearly with time
    C. Absolute roughness decreases with time
    D. Absolute roughness increases linearly with time