What Is the reduction of signal amplitude as it passed over the transmission medium?

The value of a resistor creating noise is doubled. The noise power generated is therefore

The frequency interval between two sounds whose frequency ratio is 10

Wireless local-area networks occupy which of the following segments?

Determine from the following radio frequency that falls under the Very High Frequency band of the radio spectrum.

The entire range of _____ of electromagnetic radiation is called the frequency spectrum.

_____ frequencies are exact multiples of the fundamental frequency.

The signal which is superimposed on a high-frequency sine wave is called _____.

White noise has _______ power spectral density.

The velocity of sound in dry air medium is 331.45 m/s. Calculate the velocity if there is an increase of temperature equal to 10 degrees Centigrade

Man-made noise is caused by

What is the main purpose of a communications system?

Is the reduction of signal amplitude as it passed over the transmission medium?

These are bend of light wavelengths that are too short to be seen by the human eye.

A passive circuit, usually consisting of capacitance and/or inductance, that is inserted in series with the a-c power cord of an electronic device which allow the 60-Hz current to pass and suppressed high frequency noise components.

A network that has an input of 75 dB and an output of 35dB. The loss of the network is _____

What distinguishes one electromagnetic wave form another?

One of the following is not useful for comparing the noise performance of receivers

Sound that vibrates at frequency too high for the human ear to hear (over 20 kHz)

Which of the following organizations does not maintain standards for communication systems?