Q. Which of the following is a voiceband channel ?
✅ Correct Answer: (A)
Telephone line
Explanation:
A voiceband channel is a communication channel with a bandwidth range of approximately 300 Hz to 3400 Hz, which is suitable for transmitting voice signals.
- (A) Telephone line: Yes, this is typically designed to carry voice frequencies in the voiceband range. So it's a voiceband channel.
- (B) Coaxial cable: No, it supports much higher frequencies and wider bandwidths (used for broadband).
- (C) Microwave systems: No, they operate at very high frequencies, far beyond voiceband.
- (D) Telegraph line: No, it's a narrowband channel, not specifically designed for voice transmission.
So, Telephone line is the correct voiceband channel.
Explanation by: Mr. Dubey
A voiceband channel is a communication channel with a bandwidth range of approximately 300 Hz to 3400 Hz, which is suitable for transmitting voice signals.
- (A) Telephone line: Yes, this is typically designed to carry voice frequencies in the voiceband range. So it's a voiceband channel.
- (B) Coaxial cable: No, it supports much higher frequencies and wider bandwidths (used for broadband).
- (C) Microwave systems: No, they operate at very high frequencies, far beyond voiceband.
- (D) Telegraph line: No, it's a narrowband channel, not specifically designed for voice transmission.
So, Telephone line is the correct voiceband channel.