Resistance In Fluid Systems Question Preview (ID: 1294)


Principles Of Technology Unit 4: Resistance Subunit 2: Fluid Systems. TEACHERS: click here for quick copy question ID numbers.

To calculate fluid resistance
a) divide pressure drop by flow rate.
b) multiply pressure drop by flow rate.
c) divide flow rate by pressure drop.
d) multiply flow rate by pressure drop.

Viscosity is the resistance of a fluid. When the temperature increases, liquids
a) become thinner.
b) become thicker.
c) have a higher viscosity.
d) flow more slowly.

When designing fluid systems, the efficiency of the system is increased when fluid flow is
a) laminar.
b) not streamlined.
c) turbulent.
d) swirling and mixing.

If you double the pressure of a fluid in a pipe, the flow rate will
a) double.
b) be half as much.
c) increase then decrease.
d) remain the same.

The roughness in a pipe causes
a) turbulence.
b) rusting.
c) blockage.
d) decreased resistance.

A pipe has a fluid resistance of 10 psi/gpm. If the pressure drop is 5 psi, what is the flow rate of the fluid?
a) 10 psi / 5 gpm
b) 10 psi * 5 gpm
c) 5 gpm / 10 psi
d) 5 gpm + 10 psi

What is the fluid resistance of a hose that has a flow rate of 10 gpm and a pressure drop of 30 psi?
a) 30 psi / 10 gpm
b) 30 psi * 10 gpm
c) 10 gpm / 30 psi
d) 10 gpm + 30 psi

If two identical pipes have the same diameter but different lengths, which has the greater fluid resistance?
a) the longer pipe
b) the shorter pipe
c) the pipe with no scale build up
d) the pipe with fewer bends.

Adding bends or turns to pipes causes the fluid resistance to
a) increase.
b) decrease.
c) remain the same.
d) drop to zero.

Which of the following is a correct english unit for fluid resistance?
a) psi/gpm
b) (N/m2) / (m3/sec)
c) gpm/psi
d) (m3/sec) / (N/m2

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