Answered: The loss in a cable is usually defined… | bartleby

Related questions

Question

A loss of 3 dB (-3 dB) is equivalent to losing one-half the power.
Еxample 6
The loss in a cable is usually defined in decibels per kilometer (dB/km). If the signal at the
beginning of a cable with -0.3 dB /km has a power of 2 mW, what is the power of the signal at 5
km?

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

A point source emits sound waves with a power oulput of 288 watts. What is the sound level (in dB) at a distance of 69.7 m? (Answer in 2 decimal places)
according to the barometric measurements, the sound has a decibel level of 180 dB at a distance of 161 km. Assuming the intensity falls off as the inverse of the distance squared, what was the decibel level on the island 4800 km away?
An interface is formed between a block of aluminium (with an acoustic impedance of 1.8 x 107 kg m2 s') and a block of copper (with an acoustic impedance of 4.6 x 107 kg m-2 s-1). Longitudinal sound waves travelling through the aluminium are normally incident on the boundary, and are partially reflected. a) What is the ratio of the amplitude of the reflected wave to that of the incident wave? Number b) What is the ratio of the amplitude of the transmitted wave to that of the incident wave? Number c) What percentage of the incident power is transmitted? Number d) What percentage of the incident power is reflected? Number % Ouit P Sove Questi
People with good hearing can perceive sounds as low in level as −6.62 dB at a frequency of 3000 Hz. What is the intensity of this sound in watts per meter squared?
The power output of a certain public address speaker is 3.7 W. Suppose it broadcasts equally in all directions. At what distance (in cm) from the speaker would the sound be barely audible (ß =120 dB)? (Answer in 2 decimal places)
A sound wave radiates from a speaker in all directions. If the power of the sound source is 250 W, calculate the intensity level in dB of the sound wave 0.4 km from the speaker. Hint: Presume that the sound waves spread as a sphere (not a hemisphere).
The sound intensity level at a rock concert is 114 dB, while that at a jazz fest is 88.6 dB. Determine the ratio of the sound intensity at the rock concert to that at the jazz fest.