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Cnim Formulas Questions And Answers With Verified Solutions Already Passed!!!
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Cnim Formulas Questions And Answers With Verified Solutions Already Passed!!!
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Cnim Formulas Questions And AnswersWith Verified Solutions Already
Passed!!!
Ohm's Law - ANSWER✔✔ *V = IR*
- Voltage and electromotive force are measured in volts
- Current is measured in amperes or amps (I is for intensity)
- Resistance is measured in ohms Ω
Volt ÷ KΩ = milliamp
Time Constant - ANSWER✔✔ τ = RC
TIme constant is the time it takes for the capacitor to charge to 63% of maximum.
It takes 5 time constants to reach maximum.
Cutoff Frequency - ANSWER✔✔ f(cutoff) = 1/2 πτ = 1/2 πRC
The cutoff frequency of a filter is inversely proportional to its time constant. A
long time constant means a lower cutoff and a short time constant means a
higher cutoff.
Gain - ANSWER✔✔ Gain = Output voltage / Input voltage
Sensitivity - ANSWER✔✔ Sensitivity = Input voltage / Vertical deflection (in
divisions or mm)
, Horizontal Resolution - ANSWER✔✔ Bin Width = 1 / Sampling Rate (data points
per second)
Vertical Resolution - ANSWER✔✔ # of available voltage values = 2^N
where N = number of bits
Signal to Noise ratio - ANSWER✔✔ Ratio of Signal:Noise
- 1:2 change it to 5:1
-Take second number in first ratio (2) x first number in second ratio (5) = x(10)^2 =
The number of trials needed (100)
Frequency - ANSWER✔✔ *The three properties of a sine wave are frequency,
period and phase. Frequency is the number of waves per second (Hz)*
F = 1/period
period = seconds per 1 cycle
Decibels - ANSWER✔✔ dB = 20logX
Logarithm - ANSWER✔✔ y = log(b)*x --> x = b^y
Dwell TIme - ANSWER✔✔ *The dwell time (or sampling interval or intersampling
interval) is the amount of time the averager dwells on each data point.*
- Analysis time in μsec divided by the data points = dwell time μsec
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