Exam 1: The Basics - Sound, Electrical Signal, Electromagnetic Spectrum

________ are used to measure signal level.

The power or strength of a signal is called its:

Frequency used in communications is measured in ________, which represents the number of cycles per second.

The distance a signal can travel is ________ by the attenuation caused by the capacitive effect of the circuit.

The magnetic field surrounding the earth, which is capable of carrying multiple frequencies of varying wavelengths, is called the ________ spectrum.

Which of the following is not a property of impedance?

The loudest sound that humans can tolerate has a signal strength of about 2 milliwatts.

A very long wavelength indicates a very high frequency.

The purpose for using load coils is so that a signal can travel greater distances before it fades away.

When you turn your radio up, what increases?

The acronym for the standards organization that is responsible for ensuring that each country will be able to exchange information with other countries is:

The time period used to measure the frequency of sound waves is:

________ light is the name given to the sun's frequency type.

Inductance and capacitance affect AC signals, while resistance affects both AC and DC signals.

Which of the following does NOT directly determine whether a signal will arrive and make sense to its recipient when your voice travels through the air?

Humans can generally hear sounds that fall within the frequency range of:

Resistance and inductance can be viewed as siblings with completely opposite personalities, and in fact they cancel out each other.

Which of the following statements is true of shock wave effect?

The function of impedance is to assist the signal as it travels down a medium.

Communication in its most primitive form is nothing more than transferring information between transmitter and receiver across a(n) ________.