Questions – Answers
Electrical and Electronics Engineering Interview Questions and Answers
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How Does the Grounding System Work in Aircraft & Submarines?
How is Grounding in AC/DC Systems Used for Protection in Aircraft, Ships, and Submarines? Aircraft, ships, and submarines represent significant investments and require advanced levels of electrical protection. These vehicles,…
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What Does Hanging Shoes from Overhead Power Lines Mean?
What are the Reasons Behind Shoes Strung Up on Power Lines? You may have seen colorful aerial marker balls on power lines, but what does it mean when shoes are…
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Why Do Doorbells Use Low Voltage of 12V-24V AC Instead of DC?
Why is 12V AC Preferred in Doorbells over DC Voltage? The choice of using 12V AC (alternating current) instead of DC (direct current) for doorbells circuits is driven by several…
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Why Does an Electric Tester Not Work in DC Circuits?
Why Does an Electric Tester Work Only in AC, but Not in DC Circuits? Electric testers, often referred to as voltage testers, phase testers, mains testers or test pens, are…
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Why Do The Positive And Negative Wires Spark When Touched?
Why Do The Phase And Neutral or Positive and Negative Wires Spark When Connected Together? When positive and negative conductors touch, it produces a spark. Same is the case when…
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What are the Cuts on the Rotor of Motor’s Armature?
What is Purpose of the Notches or Grooves in the Armature of a Motor? The grooves in the armature slots are used to balance the weight of the core, ensuring…
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Why Do Wind Turbines Have 3 Blades Instead of 2 or 5?
Why are Three Blades Considered Optimal for Wind Turbines, Rather than Two, Four, or More? Wind turbines have become a cornerstone of renewable energy generation, and their design has evolved…
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Difference Between Edge Triggering and Level Triggering
What is the Difference Between Level Triggering and Edge Triggering? Edge triggering and level triggering are two different types of triggering methods used in digital circuits. It enables the circuit…
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Difference between Zener Diode and Avalanche Diode
What is the Main Difference between Avalanche Diode and Zener Diode? Zener diode and avalanche diode are two different types of diodes used in electronic circuits for protection. Both of…
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Difference Between Amplifier and Operational Amplifier
What is the Difference Between Amplifier and Operational Amplifier (Op-Amp)? In electronic circuits and devices, amplifiers are frequently used to increase the power of a signal. An amplifier is an…
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