Reference no: EM13141485
Analysing spectrum anlyser output
A spectrum analyzer is connected to an unknown signal. The spectrum analyzer displays the power level of signals in dBm vertically and frequency horizontally. The spectrum of the unknown signal creates the following display:
A vertical line at -6 dBm at 0 Hz (DC),
A vertical line at a frequency of 10 kHz with a power level of -3.9 dBm,
A vertical line at a frequency of 30 kHz with a power level of -13.4 dBm,
Additional vertical lines at 50 kHz, 70 kHz with power levels at or below -18 dBm.
a. What sort of waveform do the individual lines in the frequency spectrum represent?
b. What sort of waveform does the input signal have?
c. Is the input signal periodic or non-periodic?
d. If the input waveform is periodic, what is its period?
|
Find the probability that at least one part is defective
: Identical parts of which 10 are defective and 90 are non-defective. Three parts are selected without replacement. What is the probability that at least one part is defective?
|
|
How many moles of ions are in the solution
: a solution is prepared by dissolving 20.0 g of NaI in enoug water tomake 300.mL of solution How many moles of ions are in 25.mL of thesolution?
|
|
Lifespan development
: Suppose you were curious about people's views regarding instant messaging and how it has affected the lives of Americans. Would the age of the individuals whose opinions you asked matter?
|
|
Prepare portion of the income statement beginning
: Prepare portion of the income statement beginning with "income from continuing operations before income tax" for the yr ended December 31, 2004
|
|
Examining spectrum anlyser output
: Analysing spectrum anlyser output, A spectrum analyzer is connected to an unknown signal. The spectrum analyzer displays the power level of signals in dBm vertically and frequency horizontally. The spectrum of the unknown signal creates the follow..
|
|
Find out the sales and variable cost volume variances
: Prepare flexible budget income statements, assuming volumes of 29,000 and 31,000 units. Find out the sales and variable cost volume variances, assuming volume is actually 31,000 units
|
|
Procedure performed before the balance sheet date
: Which of the following procedures is least likely to be performed before the balance sheet date?
|
|
What are your opinions of women and technology.
: What are your opinions of women and technology. Has is changed and did it open the doors for opportunities.
|
|
The australian dollar
: The Australian dollar has appreciated strongly over the past decade, leading to increased concerns over the impacts of the high exchange rate on trade-exposed sectors of the economy".
|