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Basic Pneumatic Speed Control Circuits

Total questions: 13

Worksheet time: 7mins

Name
Class
Date
1.

A flow control valve is a combination of a ___

a)

Flow meter and check valve

b)

DCV and check valve

c)

Needle valve and check valve

d)

Needle valve and restrictor valve

2.

If the load on the actuator changes, the pressure required to move the load will ___

a)

Also change

b)

Remain the same

c)

Compensate the DCV

d)

Cause the vane to stall

3.

A meter-in flow control circuit controls the fluid ___.

a)

Entering the actuator

b)

Leaving the actuator

c)

Allowed in the room

d)

Based on temperature changes

4.

Which of the following is not a part of a flow control valve?

a)

Body

b)

Vane

c)

Adjustment Screw

d)

Check Valve

5.

Exhaust port speed control works by creating ___ to control the retract speed of a single-acting cylinder

a)

Leaks

b)

Exhaust

c)

Ozone

d)

Back Pressure

6.

An independent speed control circuit may be needed with a double-acting cylinder because ___

a)

Two speeds are needed during the retract

b)

Aiding loads are present

c)

Equal extend and retract speeds are needed

d)

The supply pressure varies

7.

A needle valve controls air flow rate by causing a(n) ___

a)

Restriction

b)

Exhaust

c)

Leak

d)

Escape

8.

Another name for the rotameter flow meter is ___.

a)

Bourdon tube

b)

Variable orifice

c)

Vacuum tube

d)

Needle valve

9.

The way to read a rotameter is to read the scale from the ___.

a)

Bottom of the ball

b)

Center of the ball

c)

Top of the ball

d)

None of the answers are correct

10.

A needle valve is often used in pneumatic circuits ___.

a)

To control actuator speed

b)

To reduce atmospheric pressure

c)

To control the position of the vane

d)

To measure air flow

11.

A meter-out flow control circuit controls the speed of an actuator by

Applying back pressure to the actuator

Restricting the air flow to the actuator

Exhausting excess air

Reducing the supply pressure

a)

Applying back pressure to the actuatro

b)

Restricting the air flow to the actuator

c)

Exhausting excess air

d)

Reducing the supply pressure

12.

The flow rate of air is the amount of air that passes through a system ___.

a)

In a certain amount of time

b)

At a give temperature

c)

And is not returned to atmosphere

d)

Before the compressor is started

13.

___ port speed control affects the speed of an actuator in both direction

a)

Bi-directional

b)

Exhaust

c)

DCV

d)

Pressure