Arduino Ammeter – Measure DC Current
An ammeter is an instrument used to measure current flow in a circuit, which is measured in amperes. In a Digital ammeter, we measure the voltage across a shunt resistance, which is series to...
Mechatrofice Blog
Different Types of Rectifiers and Working
A rectifier is an electronic circuit which converts Alternating Current into Direct Current. Based on the type of input supply, rectification and output it can be classified into different types. Single Phase Rectifier Single...
3 Phase Rectifier – Half Wave and Full Wave
A 3Φ Rectifier is an electronic circuit that converts three-phase AC supply into unidirectional DC output. 3 phase rectifiers are mainly used in industrial and high power applications. In a three-phase electric power, an alternating...
Why Are Printed Circuit Boards Usually Green In Color?
Commonly PCBs are made of glass fiber reinforced epoxy resin or fiberglass board which naturally has a greenish color. And the outer layer of the PCB is a solder mask that is what we...
Operational Amplifier Viva Interview Questions and Answers
What is an op-amp? An operational amplifier is a direct coupled high-gain electronic amplifier with a differential input to which feedback is given to control its response characteristics at its single-ended output. What is called a differential...
Transformer Questions and Answers Interview Viva
What is the operating principle of a Transformer? A transformer works based on the principle of mutual induction. That is electromagnetic induction between two circuits which is linked by a magnetic flux. What...
Electrical & Electronics Quantities Units and Symbols
Electrical Quantity Quantity Symbol Unit Unit Symbol Admittance Y Siemens Ω−1 Apparent Power S Volt-Ampere VA Capacitance C Farad f Charge Q Coulomb C Conductance G Siemens Ω−1 Conductivity σ (sigma) siemens per metre...
Transformer Losses and different types Copper Iron Stray Dielectric
In every power system, the amount of useful energy would be always less than the total amount of energy applied to the system. Because some amount of energy always transforms into unwanted forms. No any...
Transformer rating in kVA not in kW explained why
The power rating of a device is the maximum magnitude of power that can be allowed to operate by the device. Active power, Reactive power, and Apparent power are rated in W, VAR, and VA respectively. Active...
Electrostatic discharge ESD protected area or EPA
An EPA (ESDPA – Electrostatic Discharge Protected Area) is an area that ensures the protection from electrostatic discharges. Electrostatic discharge (ESD) is an electrical short or dielectric breakdown; a sudden flow of electricity caused by contact between...
Difference between MCB, MCCB, ELCB, and RCCB
An electrical circuit breaker is an automatic switching device which is installed for the safety of the electrical system. It protects an electrical circuit from electrical damages caused by conditions like overload, short circuits, earth leakage, etc. During a fault...
