A/an _______________ is used for changing the direction of a pipeline?

Related Mcqs:

1. The wall thickness for a large high pressure pipeline is determined by the consideration of the____________________?

   A. Axial tensile stress in the pipe
   B. Forces exerted by static and dynamic action at bends
   C. Circumferential pipe-wall tension
   D. Temperature stresses

2. Pressure drop due to pipe fittings can be estimated by the equation, ΔP/ρ = 4f, (Le/D) (V2/2gc) where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of (Le/D) (dimensionless) for 45° elbow and 180° close return bends would be respectively around______________________?

   A. 5 and 10
   B. 45 and 75
   C. 180 and 300
   D. 300 and 500

3. Movement of pipeline caused by thermal expansion is taken care by providing ___________________?

   A. Expansion joint
   B. Changes in its direction
   C. Change in the shape of pipeline
   D. All A., B. and C.

4. In a heat exchanger, shell side fluid velocity can be changed by changing the tube _______________________?

   A. Layout
   B. Pitch
   C. Both A. & B.
   D. Neither A. nor B.

5. The buckling tendency of compression members is always in the direction of the _____________________?

   A. Least radius of gyration
   B. Axis of the load
   C. Perpendicular to the axis of the load
   D. None of these

6. Scale up problem in design based on the similarity concept takes into account _______________ similarity?

   A. Geometrical
   B. Kinematic
   C. Dynamic
   D. All A., B. and C.

7. For identical operating conditions, the pressure drop over _______________ tray is the highest out of the following?

   A. Sieve
   B. Valve
   C. Counter flow
   D. Bubble cap

8. The minimum shell thickness for tank ≤ 15 metres diameter is limited to _______________ mm, for reasons of elastic stability?

   A. 2
   B. 5
   C. 10
   D. 15

9. Nominal size of a pipe is an indication of its _______________ diameter?

   A. Inner
   B. Outer
   C. Approximate
   D. None of these

10. Normal screwed fittings are used for pipes upto a diameter of _______________ inches?

    A. 1.5
    B. 3
    C. 5
    D. 9