The voltage waveform shown in figure below is measured using a half wave rectifier and PMMC . The scale of meter was calibrated in terms of rms value of sine wave. The value of error in reading will be __________%.
Two resistors with nominal resistance values R1 and R2 have additive uncertainties, respectively. When these resistances are connected in parallel, the standard deviation of the error in the equivalent resistance R is
A set of independent current measurement taken by four observations was recorded as 115.02 mA, 115.11 mA, 115.08 mA and 115.04 mA. The range of error (average range) will be-
In the given below figure the PMMC ammeter is used for the current measurement. When switch is open at time ‘t’ instant, needle deflects to 5mA & sets back to 4.6 mA at steady state. Which of the following statement is correct ?
A resistance of 105 ohms is specified using significant figures as indicated below:
1) 105 ohms
2) 105.0 ohms
3) 0.000105 mega ohms
Which of the following statement is correct ?
From the two ammeters, we get I = 10A (±10%) and I2 = 8A (±5%).
If I1 = I – I2. Estimate the relative error in the value of I1 (in % estimated