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Electrical Measurements

Electrical Measurements for GATE Electrical Engineering, one topic per lesson: the theory in plain words, the formulas, a solved example, and GATE-style questions (MCQ, MSQ and NAT) whose numerical answers are recomputed by a program when the site is built.

Start the first lesson

1Instruments

  1. Measuring Instruments and ErrorsErrors and accuracy, PMMC, moving iron, electrodynamometer and rectifier instruments, extension of ranges with shunts and multipliers, loading effect, and instrument transformers.

2Measurement Methods

  1. Bridges and Measurement of Power and EnergyWheatstone, Kelvin double, Maxwell, Hay, Anderson, Schering and Wien bridges, wattmeter methods for single and three-phase power, energy meters, and potentiometers.
  2. Oscilloscopes and Digital InstrumentsCRO working, measuring amplitude, frequency and phase with Lissajous figures, probes, digital voltmeters and ADC types, frequency counters, Q-meter and transducers.