Low specific speed of a pump implies that, it is a/an ______________ pump?
A. Axial flow
B. Centrifugal
C. Mixed flow
D. None of these
Fluid Mechanics for Chemical
Function of air vessel provided in a reciprocating pump is to_________________?
Function of air vessel provided in a reciprocating pump is to_________________?
A. Reduce discharge fluctuation
B. Reduce the danger of cavitation
C. Avoid the necessity of priming
D. Increase the pump efficiency
A relief valve__________________?
A relief valve__________________?
A. Provides back pressure for a cylinder
B. Unloads a pump
C. Is a directional control valve
D. None of these
Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m) ________________?
Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m) ________________?
A. N2D3
B. ND2
C. N2D
D. N3D5
Drag is defined as the force exerted by the___________________?
Drag is defined as the force exerted by the___________________?
A. Fluid on the solid in a direction opposite to flow
B. Fluid on the solid in the direction of flow
C. Solid on the fluid
D. None of these
One poise (unit of absolute/dynamic viscosity) is equivalent to one_____________________?
One poise (unit of absolute/dynamic viscosity) is equivalent to one_____________________?
A. gm/cm2. sec
B. gm/cm. sec
C. cm2/sec
D. m2/sec
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will________________?
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will________________?
A. Decrease
B. Increase
C. Remain same
D. Unpredictable
In case of a pipe exit fitted with a nozzle, the____________________?
In case of a pipe exit fitted with a nozzle, the____________________?
A. Conversion of kinetic head to pressure head is facilitated
B. Conversion of pressure head to kinetic head is facilitated
C. Power transmitted through the nozzle is maximum, when the head lost due to friction in the
pipe is equal to one third of the total supply head
D. Both B. and C.
Which of the following can be used to create a flow of gas, where no significant compression is required ?
Which of the following can be used to create a flow of gas, where no significant compression is required ?
A. Reciprocating compressor
B. Blower
C. Axial flow compressor
D. Centrifugal compressor
The ratio of inertial forces to viscous forces is called the ______________ number?
The ratio of inertial forces to viscous forces is called the ______________ number?
A. Weber
B. Mach
C. Froude
D. Reynold