A balanced Wheatsone bridge ABCD has the following arm resistances : R AB = 1 k$$\Omega$$ $$\pm$$ 2.1%; R BC = 100 $$\Omega$$ $$\pm$$ 0.5%; R CD is an unknown resistance; R DA = 300 $$\Omega$$ $$\pm$$ 0.4%. The value of R CD and its accuracy is

30 $$\Omega$$ $$\pm$$ 0.9 $$\Omega$$

30 $$\Omega$$ $$\pm$$ 3 $$\Omega$$

30 $$\Omega$$ $$\pm$$ 0.9 $$\Omega$$

3000 $$\Omega$$ $$\pm$$ 90 $$\Omega$$

3000 $$\Omega$$ $$\pm$$ 3 $$\Omega$$

GATE 2022 Electrical Engineering PYQ — Electrical and Electronics Measurement

GATE 20222022PYQMCQanswer keyexplanationeasy

Electrical and Electronics Measurement · Bridges

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Recurring concept

Bridges has appeared in GATE Electrical Engineering 17 times across 14 years (2014, 2015, 2021, 2022, 2025, ...).