Question

Signal becomes weak with increase in distance travelled because of.

• A. Modulation
• B. Switching
• C. Attenuation
• D. None of the above

Answer 1

Answer: (C)

The correct option is B Attenuation

Signal becomes weak with increase in distance travelled because of Attenuation.

Consequently, positive attenuation causes signals to become weaker when travelling through the medium. ... Causes of attenuation in both signal frequency and range between the end points of the medium, affect the amount of signal reduction. As the range increases, attenuation also increases.

In a nutshell, attenuation is the loss of transmission signal strength measured in decibels (dB). As attenuation increases, the more distorted and unintelligible the transmission (e.g. a phone call or email you're trying to send) becomes. Inherent attenuation can be caused by a number of signaling issues including:

Transmission medium - All electrical signals transmitted down electrical conductors cause an electromagnetic field around the transmission. ... Crosstalk from adjacent cabling causes attenuation in copper or other conductive metal cabling.

Attenuation is a general term that refers to any reduction in the strength of a signal. ... Sometimes called loss, attenuation is a natural consequence of signal transmission over long distances. The extent of attenuation is usually expressed in units called decibels (dBs).