Question

Si units, systematic and random errors in measurement, expression of uncertainty - accuracy and precision index, propagation of errors. Pmmc, mi and dynamometer type instruments; dc potentiometer; bridges for measurement of r, l and c, q-meter. Measurement of voltage, current and power in single and three phase circuits; ac and dc current probes; true rms meters, voltage and current scaling, instrument transformers, timer/counter, time, phase and frequency measurements, digital voltmeter, digital multimeter; oscilloscope, shielding and grounding.

Answer 1

all are part of physics and u can get a well known this from books