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Category: Fluid Mechanics for Chemical
Dimension of surface tension is (where, F = force, L = length) ?
A. FL-1
B. F-1. L
C. F.L-2
D. F-2. L
Capacity of a rotary gear pump can be varied by__________________?
A. Changing the speed of rotation
B. Bleeding air into suction
C. Bypassing liquid from the suction or discharge line
D. All A., B. and C.
The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge) ?
A. Q1/Q2
B. Q2/Q1
C. (Q2 – Q1)/Q1
D. (Q2 – Q1)/Q2
Most of the centrifugal pumps used in chemical plants are usually ____________________ driven?
A. Steam
B. Diesel engine
C. Electric motor
D. Gas turbine
Ratio of inertial forces to surface tension forces is called the _____________ number?
A. Euler
B. Froude
C. Mach
D. Weber
The pressure intensity is the same in all directions at a point in a fluid________________?
A. Only when the fluid is frictionless
B. Only when the fluid is at rest having zero velocity
C. When there is no motion of one fluid layer relative to an adjacent layer
D. Regardless of the motion of one fluid layer relative to an adjacent layer
Gradually varied flow in open channel is a/an ____________ flow?
A. Steady uniform
B. Steady non-uniform
C. Unsteady uniform
D. Unsteady non-uniform
A mono pump is a __________ pump ?
A. Centrifugal
B. Piston
C. Positive acting rotary
D. A group of vacuum
A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be__________________?
A. 100
B. 200
C. 320
D. 160
The ratio of inertial forces to elastic forces is called the __________ number?
A. Reynolds
B. Mach
C. Euler
D. Weber
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