How to measure frequency using Multimeter
If your digital multimeter offers a frequency setting (Hz is the symbol) on the dial: Turn the dial to Hz. It usually shares a spot on the dial with at…
How to Measure capacitance using Multimeter
A multimeter determines capacitance by charging a capacitor with a known current, measuring the resulting voltage, then calculating the capacitance. Warning: A good capacitor stores an electrical charge and may…
How to Test Diodes Using Multimeter
How to test diodes Digital multimeters can test diodes using one of two methods: Diode Test mode: almost always the best approach. Resistance mode: typically used only if a multimeter…
Types of AC Motors and DC Motors
Electric motor is a machine which converts electric energy into mechanical energy. Its action is based on the principle that when a current-carrying conductor is placed in a magnetic field,…
Squirrel Cage Induction Motor Animation
Stator view Three-phase sinusoidal balanced excitation in 3 stator phases produces a sinusoidally distributed field rotating at the excitation frequency ωs. This field can be viewed as being created by…
Difference Between Squirrel Cage and Slip Ring Motors
A wound-rotor motor (Slip Ring Motor) is a type of induction motor where the rotor windings are connected through slip rings to external resistances. Adjusting the resistance allows control of…
What is a Transformer Tap Changer
A tap changer is a device fitted to power transformers for regulation of the output voltage to required levels. This is normally achieved by changing the ratios of the transformers…
Types of Generators
Essentially, there are two basic types of generators: • DC generators • AC generators: Asynchronous (Induction) generators and Synchronous generators INDUCTION GENERATORS The induction generator is nothing more than an…
Instrumentation Cable trays Installation in vertical orientation
The article describes a improvement for better life and easy maintenance for instrumentation cable trays for industry. The practices if applied can be a better choice over a traditional approach…
Redundant Power Supply for Critical Field Panels
The Critical applications where availability of continuous power supply is required can be met with hot swappable/redundant 24 vdc power supply. This is useful for increasing the availability of system…
