Questions – Answers

Electrical and Electronics Engineering Interview Questions and Answers

What Happens if a Power Line Falls into the Ocean Water?

What Happens if a High-Voltage Power Line Falls into the Ocean, or a Battery or Toaster Comes into Contact with a Bathtub or Seawater? The interaction between electricity and water…
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If Lightning Strikes the Sea, How Far Away is it Dangerous?

How Far Away Can a Lightning Strike Cause Damage or Death to Swimmers in the Ocean? Lightning strikes are among nature’s most powerful phenomena. However, their immense energy and unpredictable…
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Why Do Tanker Trucks Have Chains Hanging at the Back?

Why are Metal Chain Dragged by Petrol, Oil, and Fuel Trucks? You may have noticed gasoline trucks trailing a metal chain or discharge strips. While they may not look appealing,…
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Why You Should Never Buy or Use Male-to-Male Extension Cords

Why You Should Immediately Stop Using and Never Consider Male-to-Male Extension Cords What is a Male-to-Male Extension Cord? A male-to-male extension cord is a cable with male (pronged) plugs on…
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Why is the Neutral Wire Size Smaller than the Phase Wire?

Why is the Size of the Neutral Conductor Smaller than the Line Conductor in a Polyphase System? In a three-phase (poly-phase) system, the Neutral wire may sometimes be smaller than…
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Why is the Ground Wire Size Smaller than the Hot Wire?

Why is the Size of the Ground Conductor Smaller than the Line Conductor? The ground wire does not always have to be the same size as the power (phase or…
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Appliances You Should Never Plug Into an Extension Cord

List of Electrical Appliances You Should Never Plug Into an Extension Cord What is an Extension Cord? An extension cord is a flexible, insulated cable with a plug on one…
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Why Do We Need a GFCI & How Does it Protect During Faults?

Why Do We Need a GFCI Breaker and How Does it Protect During Ground Faults? A Ground Fault Circuit Interrupter (GFCI) is designed to protect circuits by detecting electrical faults…
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How Does a Standard Breaker Respond to Electrical Fault?

How Does an Ordinary Circuit Breaker Operates During Short Circuit, Overload & Ground Faults? When a standard circuit breaker detects a fault, such as an overload or short circuit, it…
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Why Doesn’t a Standard Breaker Protract Against Ground Faults?

Why Does a Standard Breaker Pose a Shock Hazard with a Broken Neutral? A broken neutral in a circuit with a standard breaker can pose a shock hazard because the…
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