A. Less than that for Tee (used as elbow, entering run)
B. More than that for Tee (used as elbow, entering run)
C. Around 90
D. Both B. and C.
Related Mcqs:
- (Le/D) for a Tee (used as elbow, entering run) would be around _______________________?
A. 5
B. 60
C. 160
D. 200 - 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 - Pressure drop due to pipe fittings can be estimated by the equation, ΔP/ρ = 4f, (Le/D) (V2/2gc) where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of (Le/D) (dimensionless) for 45° elbow and 180° close return bends would be respectively around______________________?
A. 5 and 10
B. 45 and 75
C. 180 and 300
D. 300 and 500 - Value of Peclet number = 0, is the representative of ____________________?
A. Laminar flow
B. Complete back mixing
C. Plug flow
D. Eddy diffusivity = 0 - The ratio of linear stress to linear strain is termed as the ____________________?
A. Modulus of elasticity
B. Modulus of rigidity
C. Bulk modulus
D. None of these - ____________________ strain is measured using a ‘strain rosetter’ ?
A. Volumetric
B. Shear
C. Linear
D. None of these - n the agitators, the power required will be changed with the increase of diameter of agitator D. as ____________________?
IA. D2
B. D5
C. D
D. D9 - For a given fluid, as the pipe diameter increases, the pumping cost ____________________?
A. Decreases
B. Increases
C. Remain unaffected
D. May increase or decrease depending upon whether the fluid is Newtonian or non-Newtonian - Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscosity above ____________________ poise?
A. 300
B. 600
C. 1000
D. 1500 - 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.
