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• Users: pinkcashmere
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1. ### Nyquist frequency and sampling frequency

Homework Statement ##N= \frac{2 f_s}{f_{lowest}}## ##\frac{f_s}{2} - \frac{f_s}{N}## Homework Equations - The Attempt at a Solution I have these equations listed on a formula sheet but I do not know what they are used for. It is from a chapter titled "Discrete Sampling and Analysis of Time...
2. ### Simple circuit question

Homework Statement Can someone why the voltage ##V^-## is the same voltage as that of R2? https://www.physicsforums.com/attachments/circuit-png.92144/ [Broken] Homework Equations - The Attempt at a Solution is it an application of KVL concerning the voltage for R1 and ##V^-##
3. ### Using calibration data for a beam scale -- How to apply?

Homework Statement I attached the full document, buy I just want to know about : "Using calibration procedure determine: a) Sensitivity (mV/gr) b) Overall instrument error (gr) c) Linearity error %FSO d) Hysteresis error %FSO e) Precision error %FSO" Homework Equations The Attempt at a...
4. ### Discriminator control

thanks very much for the reply! I have another question http://postimg.org/image/quz6smejb/full/ I don't really understand the basic conditions involving design/minimum volumetric flow rates to calculate reheat or to change the damper position. I was wondering if you could explain
5. ### Discriminator control

Homework Statement A factory has two zones. Zone 1 and 2 are both maintained at 75FDB. The design supply air flow rates to Zone 1 and 2 are 320 and 200 CFM, respectively. At a certain hour in summer, the cooling loads for Zone 1 and 2 are 6,000 Btu/hr and 3,000 Btu/hr, respectively. Assume...