Questions – Answers

Electrical and Electronics Engineering Interview Questions and Answers

Blocking Diode and Bypass Diodes in a Solar Panel Junction Box

Bypass Diode and Blocking Diode Working used for Solar Panel Protection in Shaded Condition In different types of solar panels designs, both the bypass and blocking diodes are included by…
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How Much Watts Solar Panel Do You Need for Home Appliances?

How to Select the Proper Solar Panel Rating for Household Appliances? If you are going to install a solar panel system (off grid or on grid) and want to find…
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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 is when a terminal is connected physically to the ground or earth. where as virtual ground is a…
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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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