Thursday , October 18 2018

## Arduino Quadcopter Drone

Arduino Quadcopter Drone Do you want to build your own arduino quadcopter? If so, then this is the article for you! Its a wish for every engineer to built their own multirotor (quadcopter) from scratch. It’s not that hard but many of you face a problem when it comes to …

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## Arduino Self Balancing Robot – Smartphone Control

Arduino Self Balancing Robot – Smartphone Control This tutorial will show you how to build arduino self balancing robot. This Self Balancing Robot is a Two-wheeled Robot that balances vertically using a closed-loop algorithm. This Self Balancing Robot Features various modes like Position Hold, Simple Mode, Rise Mode and Joystick Control. …

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## Diode Clampers – Clamping Circuits

Diode Clampers A diode clampers adds a DC level to an AC voltage. Sometimes we call clampers as  DC restorers. “A clamper is a digital circuit that changes DC level signal to the desired DC level.” In other words, the diode clampers circuit moves the whole signal up or down to …

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## Full Wave Rectifier And Its Types AC/DC Converter

Full Wave Rectifier And Its Types AC/DC Converter The DC level obtained from a sinusoidal input can be improved 100% using a process called full wave rectification. Although half wave rectifiers have some applications, the full wave rectifier is the most commonly used type in DC power supplies. A full …

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## Half Wave Rectifier AC/DC Converter

Half Wave Rectifier AC/DC Converter A fundamental application of the diode is the rectifier. The process of removing one-half the input signal to establish a DC level is called half wave rectification. A diode connected to an AC source and to a load resistor forms a half wave rectifier. The …

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## Kirchhoff’s Current Law (KCL) Kirchhoff’s Circuit Laws

Kirchhoff’s Current Law (KCL) Kirchhoff’s Circuit Laws “Kirchhoff’s current law states that the algebraic sum of the currents that arrive at a point is equal to zero.” It is the sum of the currents that flow into a terminal is equal to the sum of the currents that leave it. …

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## Kirchhoff’s Voltage Law (KVL) Kirchhoff’s Circuit Laws

Kirchhoff’s Voltage Law (KVL) Kirchhoff’s Circuit Laws “Kirchhoff’s voltage law states  that the algebraic sum of the voltages around a closed loop is zero.”  In a closed circuit, Kirchhoff’s voltage law (KVL) means that the sum of the voltage rises is equal to the sum of the voltage drops. In …

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## MCQ on Electrostatics

MCQ on Electrostatics 1) Which of the following is a vector quantity electrical potential electrical field intensity electric charge none of the above 2) The unit of field intensity is coulomb coulomb/m2 webber newton/coulomb 3) Coulomb’s law for the force between electric charges most closely resembles with newton law of …

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## MCQ on DC Motor

MCQ on DC Motor 1) Brushes of DC Motors are made of carbon soft carbon hard carbon aluminium 2) Armature reaction of an unsaturated DC machine is crossmagnetising demagnetizing magnetizing none of the above 3) Eddy current are induced in the pole shoes of a DC machine due to oscillating magnetic …

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## DC Motor Interview Questions

1) What is the principle operation of DC Motors? 2) What is back e.m.f in a DC motor? 3) Why is shaft torque less than armature torque in a DC motor? 4) Why series motor cannot be started on no-load? 5) In a generator, the main flux is distorted in the direction …

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## MCQ on DC Generator

MCQ on DC Generator 1) The yoke of the DC generator is made of silicon steel soft iron aluminium cast steel 2) The armature of a DC generator is made of silicon steel soft iron aluminum cast steel 3) The coupling field between electrical and mechanical system of a DC …

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## DC Generator Interview Questions

1) Define the principle of operation of a DC generator ? 2) What purpose is served by the pole shoe in a DC machine ? 3) What are the advantages and disadvantages of carbon brushes ? 4) What is the role of commutator in an electrical DC generator ? 5) How would you define …

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## Electrical DC Motor

Electrical DC Motor Working Principle  A machine that converts DC electrical power into mechanical power are known as an electrical DC motors. Its operation is based on the principle that when a current carrying conductor is placed in a magnetic field, the conductor experiences a mechanical force. The direction of this force is …

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## Electrical DC Generator

Electrical DC Generators Generator Principle An electrical DC generators are the machines that converts mechanical energy into DC electrical energy. An electric generator is based on the principle that whenever flux is cut by a conductor, an e.m.f is induced within the conductor that causes a current to flow in it if …

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## MCQ on Electrical Network Theorem

MCQ on Electrical Network Theorem 1) An active element in a circuit is one which ……… receives energy supplies energy both receives and supplies energy none of the above 2) A passive element in a circuit is one which ……… receives energy supplies energy both receives and supplies energy none of …

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## MCQ on Electrical DC Circuits

MCQ on Electrical DC Circuits   1) A DC circuit has ……….. as a load. resistance inductance capacitance all of the above 2) The purpose of load in an electric circuit is to increase the circuit current utilize electrical energy decrease the circuit current none of the above 3) Electrical appliances …

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## Electrical Basic Concept MCQs

Electrical Basic Concept MCQs 1) The diameter of an atom is about: 10-10 m  10-02 m 10-08 m 10-15 m 2) 1 cm3 of copper at room temperature has about: 200 free electrons 20×1010 free electrons 8.5×1022 free electrons 3×1028 free electrons 3) The mass of a proton is ……………… the mass of electron. equal to less than …

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## What is an electrical corona effect in power system

Electrical Corona Effect Electrical corona effect occurs due to ionization of surrounding air around the conductor. The ionization of air results in distortion of electric field resulting in producing tiny electrical discharge. This electrical discharge is referred as corona effect. Engineering companies are trying to reduce corona effect because in …

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## What is electrical proximity effect in power system

ELECTRICAL PROXIMITY EFFECT “Electrical proximity effect is the tendency of current to flow in undesirable patterns due to the presence of magnetic field generated by nearby conductor. “ When varying magnetic field conductors due to unequal distribution of current are placed close together. Eddy current induces in nearby conductor. Consider two adjacent conductors carrying …

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## What is electrical skin effect in power system

ELECTRICAL SKIN EFFECT “Electrical skin effect is the phenomena that arises due to unequal distribution of alternating current over the cross sectional area of metallic conductor.” In other words, it is the condition in power lines when the concentration of charge electrons over the surface of conductor increases as compared to …

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## What is an electrical eddy current

Electrical Eddy Current Electrical eddy current is the current that originates within the current carrying conductor by changing magnetic field due to Faraday’s law of induction. Eddy current circulates in a closed loop within the conductor, perpendicular to the magnetic field that generates it. It may generate when a conductor is …

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## What is meant by an electrical stray current

Electrical Stray Current Electrical stray current refers to the flow of electrical current via two objects due to potential difference, imbalance or wiring flaws. Small voltage difference between two grounded objects in separate location may exist because of ordinary flow of current within the power system. However, large voltage difference can …

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## Electrical fault current and its types

Electrical Fault Current Electrical fault is an abnormal condition in our power system. It can be due to any type of equipment failures such as transformer or electric machines, human error or environmental conditions. All these type of faults can cause heavy electrical fault current, interruption of electricity, equipment damage …

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## What is charge particles and electrical current

What is charge and electrical current in electrical circuit? Charge Particles While studying electrical engineering, engineer should must be familiar of the basic electrical engineering terms. Charge is also one of the basic and fundamental building block unit of electrical current. One can explain charge definition in simple words as: “Charge …

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