Basic Concepts
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How to Install PoE IP CCTV Cameras with NVR Security System
PoE IP CCTV Camera Installation Wiring with NVR – Step by Step In the latest technology era, AI security and surveillance is taking the major role in protection systems of…
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How to Install a CCTV Camera? CCTV Camera Installation with DVR
CCTV Camera Installation Wiring with DVR Security System – Step by Step To keep the system simple (as it is) we will go step by step to show how to…
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How to Size and Find the Numbers of Ceiling Fan in a Room?
How to Calculate the Numbers of Fans and Proper Size of Ceiling Fan? Generally, the power wattage of a ceiling fan is 100 watts. For this reason, no more than…
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Why Does A Capacitor Block DC But Pass AC?
Why Does a Capacitor Allow AC and Block DC? One of the most common question asked by electrical engineering students again and again that’s why do capacitors block DC and…
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Difference Between Conductor, Semiconductor and Insulator
What is the Difference Between Conductors, Semiconductors and Insulators? The main difference between the conductor, semiconductor & insulator is in its conduction state. The conductors always conduct electric current while…
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Difference Between Conductor and Superconductor
What is the Difference Between Conductor and Superconductor The main difference between a conductor and superconductor is that a superconductor has zero electrical resistance while conductors have some finite resistance.…
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AC Voltage at Home is 230V but its Equation is v = Vm Sin θ. Explain?
Domestic AC Voltage at Home is 230V but its Equation is v = Vm Sin θ. Explain the Difference? Our homes are supplied with sinusoidal voltage whose equation should be…
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Difference Between Voltage and EMF?
Fundamental Difference Between EMF and Voltage? What is a Voltage? The required amount of energy to move the unit charge from one point to another is known as Voltage. In…
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A Voltmeter, Ammeter & Cell are Connected in Series. Ammeter shows No Deflection. Why?
A Voltmeter, Ampere Meter and a Battery Cell are connected in Series. It is Observed that Ammeter Practically Shows No Deflection. Why? Due to the large resistance of the voltmeter,…
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Difference Between Real Ground and Virtual Ground
What is the Difference Between Real Ground and Virtual Ground? Real ground refers to a physical connection between the metallic body of a device to the earth or ground through…
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