Analog input modules

A digital signal has two states, on and off, is this correct?

• NO

• YES

Typical analog inputs and outputs vary from:

• 0 to 20 milliamps

• 4 to 20 milliamps

• 1 to 5 volts

• 0 to 10 volts

Current analog input can be divided into:

• 5-wire Analog Input 

• 3-wire Analog Input 

• 4-wire Analog Input 

• 6-wire Analog Input 

The value of the signal from 4 to 20mA refers to the current?

• NO

• YES

Analog voltage input modules are available in unipolar types?

• YES

• NO

• and bipolar