Questions – Answers
Electrical and Electronics Engineering Interview Questions and Answers
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What is kWh (Kilowatt hour)? – Definition, Formula and Calculation
What is Kilowatt hour (kWh)? – Definition, Formula, Example and Calculation Kilowatt-hour (kWh) is a unit of energy commonly used to measure electricity consumption. It is defined as the energy…
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What is Ohm (Ω)? Unit of Electrical Resistance and Impedance
Ohm “Ω”: Definition, Formula, Measurement, Conversion and Calculation What is Ohm Ω? Ohm is a unit of electrical resistance, named after Georg Simon Ohm, a German physicist who discovered Ohm’s…
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Difference Between 50 Hz and 60 Hz Frequency System
What is the Difference Between 50-Hz and 60-Hz Frequency System? The electricity that we use in our homes is produced and supplied by huge generators inside the power generation stations.…
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Difference Between Socket, Outlet and Receptacle
What is the Main Difference Between Outlet, Socket and Receptacle? The terms “socket” and “outlet” are often used interchangeably, but they have different meanings in electrical terminology. In electrical trade…
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Why Do Prongs in Electrical Plugs Have Holes in Them?
Why Do Electric Plugs Have Holes in the Prongs? As you may have already noticed the two little holes near each prong’s tip in an electric plug. If not, there…
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Which One is More Dangerous? 50Hz or 60Hz in 120V/230V & Why?
Which Frequency Level is Safer? 60Hz or 50Hz in 230V & 120V Circuits? Here is another silly question because there is no significant difference between 50Hz and 60Hz. It would…
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Which One is More Dangerous? 120V or 230V and Why?
Which AC Voltage Level is Safer? 230V or 120V in Domestic and Residential Applications We all know that the domestic and residential voltage levels at the homes are 230V AC…
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What is Ampere (A)? Unit of Electrical Current & Calculation
Amps “A”: Definition, Formula, Measurement, Conversion and Calculation What is Ampere? An Ampere is the unit of electric current. It is named after the French physicist André-Marie Ampère (who is…
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What is Volt (V)? Unit of Electrical Potential and Voltage
Volt “V”: Definition, Formula, Measurement, Conversion and Calculation What is Volt? A Volt is the derived unit of voltage, electric potential or potential difference and electromotive force (EMF). It is…
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How to Calculate the Right Size Battery? Battery Bank Size Calculator
Determine the Suitable Size of Battery Bank Capacity for Solar, Home & General Applications – Example & Calculator Direct usage of renewable energy like wind and solar power is not…
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