The Signal at the Input to a Balanced Twisted Pair

question 2

Multiple Choice

The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. What is the signal-to-noise ratio (SNR) (dB) at the receiver input?

• A) 10 dB
• B) 30 dB
• C) 40 dB
• D) 60 dB
• E) 100 dB

Understand the structure and function of components within the carpel.

Describe the process and significance of double fertilization.

Identify and explain the ploidy levels of different cells in flowering plants.

Explain the role and development of male and female gametophytes.

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Definitions:

Independent Variable(s)

are the variables in an experiment that are manipulated to test their effect on dependent variables, allowing researchers to determine cause-and-effect relationships.

Internal Validity

The extent to which changes in the independent variable caused changes in the dependent variable.

Independent Variable

A variable in an experiment that is manipulated or changed by the researcher to observe its effect on the dependent variable.

Dependent Variable

In an experimental setting, it is the variable being tested and measured, expected to change as a result of manipulations to the independent variable.