GATE EE 2012 Electrical and Electronic Measurements Solution

GATE EE 2012 Electrical and Electronic Measurements Solution

A periodic voltage waveform observed on an oscilloscope across a load is shown. A permanent magnet moving coil (PMMC) meter connected across the same load reads.

GATE EE 2012 Electrical and Electronic Measurements Solution 1 - Grad Plus

a) 4V 

b) 5V

c) 8V

d) 10 V 

Ans. (a) 

Explanation –

As PMMC meter reads only DC value or average value.

V_{avg}=\frac{Area\; under\; the \; curve}{Total \; Time} V_{avg}=\frac{\left ( \frac{1}{2}\times 10\times 10 \right )+(-5 \times 2)+(5\times 8)}{20} V_{avg}=\frac{80}{20}=4V

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