Basic Pneumatic Speed Control Circuits

1.

Multiple Choice

30 sec

1 pt

A flow control valve is a combination of a ___

Flow meter and check valve

DCV and check valve

Needle valve and check valve

Needle valve and restrictor valve

2.

Multiple Choice

30 sec

1 pt

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

Also change

Remain the same

Compensate the DCV

Cause the vane to stall

3.

Multiple Choice

30 sec

1 pt

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

Entering the actuator

Leaving the actuator

Allowed in the room

Based on temperature changes

4.

Multiple Choice

30 sec

1 pt

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

Body

Vane

Adjustment Screw

Check Valve

5.

Multiple Choice

30 sec

1 pt

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

Leaks

Exhaust

Ozone

Back Pressure

6.

Multiple Choice

30 sec

1 pt

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

Two speeds are needed during the retract

Aiding loads are present

Equal extend and retract speeds are needed

The supply pressure varies

7.

Multiple Choice

30 sec

1 pt

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

Restriction

Exhaust

Leak

Escape

8.

Multiple Choice

30 sec

1 pt

Another name for the rotameter flow meter is ___.

Bourdon tube

Variable orifice

Vacuum tube

Needle valve

9.

Multiple Choice

30 sec

1 pt

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

Bottom of the ball

Center of the ball

Top of the ball

None of the answers are correct

10.

Multiple Choice

30 sec

1 pt

A needle valve is often used in pneumatic circuits ___.

To control actuator speed

To reduce atmospheric pressure

To control the position of the vane

To measure air flow

11.

Multiple Choice

30 sec

1 pt

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

Applying back pressure to the actuatro

Restricting the air flow to the actuator

Exhausting excess air

Reducing the supply pressure

12.

Multiple Choice

30 sec

1 pt

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

In a certain amount of time

At a give temperature

And is not returned to atmosphere

Before the compressor is started

13.

Multiple Choice

30 sec

1 pt

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

Bi-directional

Exhaust

DCV

Pressure

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