Engineering, Control Systems. Test 62

Why does the output (instrument supply) pressure of a reducer fluctuate ?

Because of the variation of the output capacity.
Because of the variation on the output pressure.
Because the movement of the membrane follows the input pressure.
Because of the characteristic of the spring.

How is the tool set up when thread cutting on the centre lathe?

Using a thread gauge against the work piece.
With the shank against the face of the work piece.
With the shank at right angles to the work piece.
By eye and then adjusted before the final cut.

The monitoring system that tests the plant for readings of the temperature, pressure etc. is called:

the demand display unit.
the comparing unit.
the scanning unit.
the loop back system.

Why is stainless steel swarf particularly hazardous?

It is a continuous piece and can become caught up in the workpiece
It is very hot.
It has extremely sharp edges.
Breaks into chips that then fly off the work piece.

What precaution may be necessary when using the faceplate with an irregular shaped work piece on a centre lathe?

Disconnect the lead screw.
Use hand feed.
Use very low chuck speeds.
Use a balance weight on the faceplate.

Control valves in a controlled process can be either pneumatic, electrically or hydraulically operated. What kind of medium is used to control this valve ? When is it used ?

Hydraulic, when a big force or torque is required.
Pneumatic, when an accurate valve response is required.
Pneumatic, when a big force or torque is required.
Hydraulic, when an accurate valve response is required.

Review Answers

Engineering, Control Systems. Test 62

Engineering, Control Systems. Test 62

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