How to Measure Duty Cycle using Multimeter
Duty cycle basics Duty cycle is the ratio of time a load or circuit is ON to the time a load or circuit is OFF. A load that is turned…
How to do Continuity Testing using Multimeter
Continuity Testing using Multimeter Turn the dial to Continuity Test mode ( ). It will likely share a spot on the dial with one or more functions, usually resistance (Ω).…
How to Measure AC Voltage using Multimeter
1. Turn the dial to á¹½. Some digital multimeters (DMMs) also include m á¹½ . If voltage in the circuit is unknown, set the range to the highest voltage setting…
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…
