# Resistance In Fluid Systems Question Preview (ID: 1294)

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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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