Related Questions

A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.
A 45
B 60
C 80
D 95
According to Euler's column theory, the crippling load for a column of length (l) fixed at both ends is __________ the crippling load for a similar column hinged at both ends.
A Equal to
B Two times
C Four times
D Eight times
When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.
A Less than
B More than
C Equal to
D None of these
Maximum plate efficiency is achieved in case of __________ flow.
A Split
B Cross
C Cascade
D Reverse
-Column row+Column row+Column row এই ফরমূলা কিসের?
A ভাগ এর
B যোগ এর
C গুণ এর
D বিয়োগ এর
For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as
A 2E
B 3E
C 4E
D 6E
Plate efficiency in a distillation column is reduced due to the __________ of liquid.
A Entrainment
B Foaming
C Weeping & dumping
D All of the above
For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to
A $$\sqrt {\text{x}} $$
B $$\frac{1}{{\sqrt {\text{x}} }}$$
C x
D $$\frac{1}{{\text{x}}}$$
Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.
A Plane
B Curved
C Ribbed
D Either A or B
In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate
A Fully by direct bearing
B Fully through fastenings
C 50% by direct bearing and 50% through fastenings
D 75% by direct bearing and 25% through fastenings

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