DC
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Questions - Answers
Difference between AC and DC (Current & Voltage)
Difference Between AC (Alternating Current) & DC (Direct Current) The Alternating Current (AC) and Direct Current (DC) are the two types of electric currents that coexists in our daily life.…
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Basic Concepts
What is Electric Current, its Unit, Formula, Types & Applications
Electric Current, its Unit, Formula, Types, Properties, Measurement & Applications In this modern age of technology, almost everything runs on electricity. It plays an important role in our daily life…
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Capacitors
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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Questions - Answers
Why an Inductor acts as a Short Circuit in DC Supply?
What is the Role of Inductor in DC Circuit? In short, there is no frequency in DC supply i.e. frequency in DC = 0. We know that inductive reactance: XL…
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Questions - Answers
Is Lightning AC or DC ?
Is Lightning Alternating Current (AC) or Direct Current (DC)? Lightning is a transient impulse, meaning it’s neither purely AC nor DC, but rather a combination of both. In other words,…
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Transformer
Why Can’t a Transformer Be Operated on DC Supply?
What Happens When the Primary of a Transformer is Connected to the DC Supply? A transformer is a device which step-up or step-down the level of AC current or voltage…
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Protection
What Happens When an AC Line Touches a DC Line?
What Happens When DC Equipment are Operated on AC Voltage and Vice Versa ? AC and DC Mixed Operated Devices There is no simple, one-word answer like ‘Yes’ or ‘No’…
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Protection
AC or DC – Which One is More Dangerous And Why ?
Which is More Dangerous – AC or DC? First of all, keep in mind that both AC and DC voltage and Current are dangerous and hazardous. Both are our friends…
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DC Circuits
Why Do Electronic Circuits Use DC Current instead of AC?
Why Electronic Devices Use DC Supply instead of AC Supply ? One thing should be cleared that not all the electronic devices, components and circuits are using only DC supply,…
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AC Fundamentals
Why Does AC Need More Insulation than DC at the Same Voltage Level?
Why Does AC Voltage Require More Insulation than DC Voltage for the Same Working Voltage Level? For the same working voltage, the potential stress on the insulation is lower in…
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