Tube height in a calandria type evaporator is normally less than _______________ metres?
Tube height in a calandria type evaporator is normally less than _______________ metres?
A. 1
B. 2
C. 3.5
D. 5.5
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In a ______________ riveted joint, the rivets in the various rows are opposite to each other?
In a ______________ riveted joint, the rivets in the various rows are opposite to each other?A. Zig-zag
B. Chain
C. Diamond
D. None of theseHeat transfer co-efficient, hG(Kcal/hr.m2 .°C) and mass velocity of air, G (kg/hr.m2 ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to ____________________?
Heat transfer co-efficient, hG(Kcal/hr.m2 .°C) and mass velocity of air, G (kg/hr.m2 ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to ____________________?A. hG = 1.004G0.37
B. 1.004G0.8
C. hG = 0.0176G0.37
D. 0.0176G1.37The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about ______________ times the design pressure?
The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about ______________ times the design pressure?A. 1.5 to 2
B. 3 to 4
C. 4 to 5
D. > 5Weep holes provided in the plates of a distillation column ____________________?
Weep holes provided in the plates of a distillation column ____________________?A. Facilitate draining out liquid from a tray when the unit is not in operation
B. Are normally located near the overflow weir so that any delivery of liquid during operation
follows approximately the same path as the overflow fluid
C. Must be large enough (usually 1/4″ to 5/8″ dia) to prevent plugging but should not deliver
excessive amount of fluid during operation
D. All A., B. and C.Excessive liquid gradient on a tray may result in the______________________?
Excessive liquid gradient on a tray may result in the______________________?A. Maldistribution of gas
B. Back trapg
C. Gas blowing beneath cap skit
D. All A., B. and C.In sieve plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally ______________ times the hole diameter to give the required hole area?
In sieve plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally ______________ times the hole diameter to give the required hole area?A. 0.5 to 1.5
B. 2.5 to 4.0
C. 5 to 10
D. 10 to 15