Deck 21: Reading Large Schematic Diagrams

Question 1

Schematics in industry are often small.

Answer 1

False

Question 2

What does the notation (EP12246-00) indicate?

Answer 2

The notation (EP12246-00) indicates that you are looking at Electrical Print number 12246 and line number 00.

Question 3

The accompanying figure shows ____________________ current transformers.

Answer 3

two
2

Question 4

It is common for high voltage disconnect switches to have four contacts for the switch.

Question 5

Figure 21-2

The accompanying figure indicates that the motor is connected to a 2300-volt ____________________ phase 60 hertz power line.

Question 6

Figure 21-5

At the right side of the schematic shown in the accompanying figure is the notation "LOCATED IN RELAY CABINET". What information is given by this notation?

Question 7

The accompanying figure indicates that there is a 200 amp, disconnect switch rated at 5,000 volts that can be used to disconnect the ____________________ from the power line.

Question 8

Schematics in industry may contain several pages.

Question 9

In the accompanying figure, at the far right-hand side is the notation (-08, 24, 14). What do these numbers indicate?

Question 10

How much output current do current transformers produce under a short-circuit condition?

Question 11

What does it indicate if coil symbols are used for overloads, not heater symbols, in a schematic?

Question 12

All manufacturers use the same numbering and notation system for schematics.

Question 13

Figure 21-4

On line 02 of the schematic shown in the accompanying figure, there are three terminals marked TB-5B. These labels indicate ____________________ points.

Question 14

____________________ is generally used to help the electrician interpret the meaning of certain components and find contacts that are controlled by coils.

Question 15

Push buttons, HOA switches, pilot lights, and so on are generally located on a control terminal where an operator has access to them.