In Non Return to Zero Encoding Schemes,the Signal or Voltage

question 34

Multiple Choice

In Non Return to Zero encoding schemes,the signal or voltage level does not return to 0v (zero volts) ; one of the problems with this type of encoding is that:

• A)it is sometimes difficult to synchronize the timing of the transmitter and the receiver
• B)it does not work well with serial communications
• C)the signal ground of the transmitter is often different from that of the receiver
• D)it works only for analog signals

---

Definitions:

Repolarization Phase

The stage of a heartbeat where heart muscle cells return to their resting electrical state, following depolarization.

Depolarization Phase

The stage in the action potential of a cell in which the cell membrane's charge becomes more positive compared to its resting state.

Action Potential

A rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane due to the flow of ions in and out of the neuron.

Repolarization Phase

A phase in the cardiac cycle where the heart muscle cells return to their resting state by repolarizing their membrane potentials.