Electrical and Electronics Tutorials

Classification of Resistance Resistance that are required to be measured may have any value from a few micro ohms to mega ohms. From t...

Weston (M.I) Type Frequency Meter Principle:  It is a moving iron instrument which operates on the principle of variation of impedance i...

Power Factor Meter The power factor of an A.C circuit can be calculated from the following relation by measuring the current, voltage an...

Errors and their Adjustments in 1Φ energy meter Energy meters should give correct readings over a period of several years under normal u...

Single Phase Induction Type Energy Meter Single phase induction type energy meters are extensively used for the measurement of electrica...

Errors in Dynamometer Type Instrument The main sources of error in a dynamometer type of instruments are due to 1.        Low torque t...

Dynamometer Type Wattmeter This is also similar in design and principle to the dynamometer type ammeter and voltmeter. Pic 1 C...

Advantages and Disadvantages of Dynamometer Type Instruments Advantages: 1.        These instruments are free from hysteresis losses a...

Dynamometer Type Instrument ElectroDynamometer Instrument The electrodynamometer type instrument is a transfer instrument. A trans...

Extending the Range of Ammeters and Voltmeters The ranges of electrical measuring instruments (whether ammeter, voltmeter or any other t...