Normal screwed fittings are used for pipes upto a diameter of _______________ inches?
Normal screwed fittings are used for pipes upto a diameter of _______________ inches?
		A. 1.5
B. 3
C. 5
D. 9
		A. 1.5
B. 3
C. 5
D. 9
		A. Δp = G
B. Δp = G0.5
C. Δp = G2
D. Δp = 1/G0.6
		A. pD/2t
B. pD/4t
C. pD/3t
D. pD/6t
		A. Height is 75% of the I.D. of the shell
B. Height is 25% of the I.D. of the shell
C. Spacing is 75% of its height
D. Width is 25% of its height
		A. Diameter of the bubble cap column
B. Diameter of the sieve plate column
C. Tray pressure drop
D. Residence time in the downcomer for the disengagement of entrained vapour
		A. Increases capacity
B. Increases economy
C. Does not affect the capacity
D. Both B. & C.
		A. 0.01 – 0.5
B. 0.07 – 0.12
C. 0.5 – 1.0
D. 1 – 3