Electric power is the most efficient form of energy form that can be transported from one place to another. However, it can be dangerous. Current in whatever form (either AC or DC is fatal for us). But at which they become dangerous, and for same voltage levels which one is dangerous. AC current can be … Read more
Electrical outlet wiring can be done in two ways: Ring main wiring In ring main wiring method a loop of each wire (Live, Neutral, and Phase) is made starting from the first outlet to last outlet and then again back to the original point. The ring main provides a two-way flow of power from one … Read more
Very often you came across transmission lines loaded with birds. Ever wondered that: Why birds are not electrocuted on power lines In this post, you’ll learn the answer. Electric current is defined as the rate of flow of electric charge from one point to another. The flow of electric current requires a potential difference between … Read more
A cable lug is a device used for connecting electrical cables to electrical appliances, surfaces, and other equipment. One commonplace for employing cable lugs in the electric industry is the power distribution boards. Cables are terminated into breakers, earth and neutral strips via cable lugs. Given below are the 6 most popular types of cable … Read more
Two-way wiring switch is used to control a lamp from two different locations. The figure below displays the connections for this type of wiring: Work Flow At instant suppose the light is turned on. If any position of the switches is changed then the LED (Lamp, bulb) will turn off. Again if switching position is … Read more
Electric Power is defined as the product of voltage and current. This post illustrates the SI unit of electrical power. SI unit of electric power is: volt (V) amps (A) watt (W) joule (J) Correct answer: 3. watt Explanation: From Basic Electrical and Electronics Engineering topics we know about voltage and current: Voltage: Unit is … Read more
Wiring single-phase split AC is a very easy task provided that proper tools and skilled hands at service. The diagram below is a general reference purpose diagram which illustrates generally the method of how Single-phase split AC units are installed. Depending on your model of AC the wiring can be different. For installation purposes always … Read more
Statement: Three resistors of 15 ohms are connected in parallel. The equivalent resistance is: 12.5 ohms 10 ohms 5 ohms 3 ohms Answer: 5 ohms Discussion: Brief solution: The basic formula for parallel resistors is: In case of three resistors: 1/R(eq) = 1/R(1) + 1/R(2) + 1/R(3) Solving this we obtain R(eq) = 5 ohms … Read more
Why capacitor blocks DC while allows AC is one of the most popular question in Electrical and Electronics Engineering. But does capacitor actually blocks DC? This post provides to question Consider a parallel plate capacitor. Under normal conditions, the plates of capacitors contain a huge number of free electrons. Let’s consider a DC source that … Read more
Transformer short circuit test is one of the two popular types of tests performed on transformers. MCQ: Short circuit test of transformer is used to determine: Core losses Copper losses Both of these None of these Answer at end. Answer: The short circuit test of transformer is used to determine copper losses.