Deck 20: Designing Control Systems for Easy Maintenance

Question 1

While more actual physical work is probably done on the machine, the ____________________ is generally the key to locating trouble.

Answer 1

control cabinet

Question 2

Components such as relays, limit switches, solenoids, timers, and pyrometers are available in convenient ____________________ designs.

Answer 2

plug-in

Question 3

Within an organization, maintenance or troubleshooting can be assisted by standardization of circuit numbers and component numbers of designation.

Answer 3

True

Question 4

For large machinery with many motions, a(n) ____ is typically used to provide visual indication instead of numerous indicating lights.

A) mechanical push-button control panel
B) alarm system
C) circuit drawing
D) human-machine interface

Question 5

____________________ is directly proportional to the time it takes to locate the trouble and repair or replace faulty parts.

Question 6

When the contacts of limit switches or selector switches are separated in a circuit drawing, it makes it easier for the maintenance personnel reading the drawing.

Question 7

All conductors and terminals should be properly marked with numbers corresponding to the ____.

A) PLC input card
B) PLC output card
C) local convention
D) wiring diagram

Question 8

In general, the use of the ____ switch requires greater overall knowledge of electrical work.

A) proximity
B) plug-in
C) vane
D) mechanical

Question 9

There are aids to making original elementary diagrams and layouts more useful and to cutting maintenance and troubleshooting time. Numbering elementary circuit lines and ____________________ the relays and their contacts are two such aids.

Question 10

A much faster job of troubleshooting can be done if all connections are available in one location.