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

Related Mcqs:

1. When one of the fluids is highly corrosive and has fouling tendency, it should_____________________?

   A. Preferably flow inside the tube for its easier internal cleaning
   B. Preferably flow outside the tube
   C. Flow at a very slow velocity
   D. Flow outside the tube, when the flow is counter-current and inside the tube when the flow is
   co-current

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

   A. Elbow
   B. Union
   C. Flange
   D. Disc compensator

3. The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always ?

   A. 1
   B. < 1
   C. > 1
   D. Equal to the order of reaction

4. A certain pressure vessel manufacturer avoids doing reinforcements calculations for openings by always providing a reinforcing pad extending upto double the diameter of the opening and of the same material and thickness as that of the shell wall. If area compensation is accepted as a code guideline, his approach leads to safe design____________________?

   A. Only if the opening is on spherical vessel
   B. Only if the opening is on a vertical cylindrical vessel
   C. Only if the opening is on a horizontal cylindrical vessel
   D. Irrespective of the shape of the vessel

5. Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to _____________________?

   A. 5 cms
   B. 40% of the I.D. of the shell
   C. 25 cms
   D. I.D. of the shell

6. _____________________ tray arrangement is recommended for distillation column having diameter upto 4 ft ?

   A. Radial flow
   B. Cross flow
   C. Split flow
   D. Cascade

7. A riveted joint does not fail by _____________________ of rivets?

   A. Tearing
   B. Shearing
   C. Tearing of the plate across a row
   D. None of these

8. In a shell and tube heat exchanger, the ‘tube pitch’ is defined as the _____________________?

   A. O.D. of the tube for square pitch
   B. Shortest distance between two adjacent tube holes
   C. Shortest centre to centre distance between adjacent tubes
   D. None of these

9. Stage efficiency for packed tower varies with the____________________?

   A. Type & size of packing
   B. Fluid rates and fluid properties
   C. Operating pressure and column diameter
   D. All A., B. and C.

10. The necessary wall thickness for a metallic storage vessel is a function of the ___________________?

    A. Ultimate tensile strength (or yield point) of the material and operating temperature
    B. Operating pressure and welding/joint efficiency
    C. Diameter of the vessel
    D. All A., B. and C.