FIGURE 21-1 Refer to Figure 21-1

question 108

Multiple Choice

FIGURE 21-1 Refer to Figure 21-1.The marginal propensity to save can be expressed as

• A)DE/Y₁Y_3.
• B)DE/Y₂Y_3.
• C)DF/Y₂Y_3.
• D)FE/Y₁Y_3.
• E)FE/Y₂Y_3.

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Definitions:

Ladder Logic

A graphical programming language resembling electrical relay logic, used for developing programs in programmable logic controllers (PLCs).

Output

The result or effect of a process, often referring to the signals or data sent by a system to actuate devices or display information.

Coil Symbols

In ladder logic or electrical schematics, coil symbols represent the output of a circuit and are controlled by the preceding contacts.

Internal Control Relay

A virtual relay used within a PLC program to perform logic operations without physical hardware.