Category: Instrumentation

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Multimeter Maintenance Guide

Multimeter Maintenance Guide ( OR) Proper Use of Multimeter: Multimeter- Introduction A Multimeter is basically a PMMC (Permanent Magnet Moving Coil) meter. It is a single instrument used to measured current, resistance and voltage....

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Oscilloscope Tutorial: Basics and Construction

Cathode Ray Oscilloscope Tutorial: Oscilloscope Introduction and Construction: The CRO is used to measure both AC and DC voltages. In this post we will discuss about internal components of the oscilloscope. Construction: The basic arrangements of...

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Wattmeter Connection tutorial

How to connect the wattmeter to the circuit? In our previous posts we discussed about the wattmeter types, common errors during measurement construction and working principle. In this post we will discuss about Wattmeter Connections. It...

Errors in Wattmeter Readings

 Wattmeter Reading Errors While using wattmeter for power measurement, some errors will happen in the readings particularly when we use in ac systems. They are due to  Pressure coil inductance Pressure coil capacitance Mutual...

Wattmeter Types

Wattmeter Introduction: Wattmeter is used to measure power at any instant( to find the instantaneous value) in the circuit.  Wattmeter gives direct indication of average power in the circuit. In fact wattmeter combines the...

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How wattmeter works?

How does wattmeter work? In this post we are going to understand how wattmeter works… before that just refresh about the electrical power. Power Definition: Electrical Power(P) is defined as the rate at which work...