List of top Instrumentation Engineering Questions on communication systems

Numerical Aperture (NA) of an optical fiber is given by

Compared to single-mode fibers, multimode fibers have

Which optical source is preferred for long-distance, high-speed fiber communication?

A carrier of frequency \(1\,\text{MHz}\) is amplitude modulated by a \(5\,\text{kHz}\) signal. The bandwidth of the AM signal is

For an FM signal with peak frequency deviation of \(50\,\text{kHz}\) and modulating frequency of \(10\,\text{kHz}\), the modulation index is

In TDM

Compared to single-mode fibers, multimode fibers have

Which optical source is preferred for long-distance, high-speed fiber communication?

Numerical Aperture (NA) of an optical fiber is given by

A carrier of frequency \(1\,\text{MHz}\) is amplitude modulated by a \(5\,\text{kHz}\) signal. The bandwidth of the AM signal is

For an FM signal with peak frequency deviation of \(50\,\text{kHz}\) and modulating frequency of \(10\,\text{kHz}\), the modulation index is

In TDM

In amplitude modulation, the modulation index should be: