Le/D) for 90° elbow (medium radius) and 90°square elbow would be respectively around___________________? A. 25 and 60 B. 3 and 5 C. 100 and 250 D. 250 and 600

Diameter of the sieve tray column is determined by the_________________? A. Lower limit of vapour velocityB. Upper limit of the vapour velocity C. Hole diameter of the sieve tray D. Height of the plate spacing

Maximum acceptable total liquid gradient over a tray is about _______________ mm? A. 5.5B. 12.5 C. 30.5 D. 45.5

A minimum clearance of about _______________ mm is maintained between the distillation column wall and the bubble cap? A. 19B. 38 C. 67 D. 95

Seamless pipe is made________________? A. From rolled strips formed into cylinders and seam-welded B. By extrusion & casting into static and centrifugal molds C. By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer…

For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is_________________? A. d1/(d1 + d2) B. d2/(d1 + d2) C. (d1 + d2)/d1 D. (d1 +…

Optimum economic pipe diameter for fluid flow is determined by the____________________? A. Viscosity of the fluid B. Density of the fluidC. Total cost considerations (pumg cost plus fixed cost of the pipe) D. None of these

The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is____________________? A. 0.25 B. 0.50 C. 0.75 D. 1.25

Souders Brown equation given by, U = Kv √(ρl – ρv)/ρv, is used for the calculation of the ______________ in a continuous distillation column? A. Diameter of the bubble cap column B. Diameter of the sieve plate column C. Tray…

Pressure differential maintained across a continuous rotary vacuum filter is in the range of _______________ mm Hg column? A. 50 to 100 B. 100 to 150C. 250 to 500 D. 600 to 700