Indepth Electrical engineering

Voltage Regulation of Transformers Introduction Voltage regulation is an important performance parameter of a transformer. It indicates how much the secondary terminal voltage changes as the load varies, while the primary input voltage remains constant. In simple words: 👉 Voltage Regulation = % change in secondary voltage from no-load to full-load condition. Good transformers are expected to have low voltage regulation , meaning they maintain nearly constant secondary voltage under varying load conditions. Definition of Voltage Regulation of Transformer Voltage regulation of a transformer is defined as: Voltage Regulation = V n o   l o a d − V f u l l   l o a d V n o   l o a d \text{Voltage Regulation} = \frac{V_{no\ load} - V_{full\ load}}{V_{no\ load}} Where: V n o   l o a d V_{no\ load} = Secondary terminal voltage at no load V f u l l   l o a d V_{full\ load} = Secondary terminal voltage at full load Types of Voltage Regulation ...

How to Calculate Transformer Rating for a Particular Machine Load When selecting a transformer for a machine, you cannot directly match the HP rating of the machine with the transformer rating. Transformers are rated in kVA , while machines are usually rated in HP or kW . To determine the right transformer size, we need to: Convert HP → kW Convert kW → kVA (considering power factor) Add a safety margin (20%) Select the next available standard transformer rating Flowchart: Steps to Calculate Transformer Rating Machine Rating (HP) ↓ Convert HP → kW (kW = HP × 0.746 ) ↓ Convert kW → kVA (kVA = kW ÷ PF) ↓ Apply Safety Margin (kVA × 1.2 ) ↓ Select Next Standard Transformer Rating Step 1: Convert HP into kW The standard conversion is: 1   HP = 0.746   kW 1 \, \text{HP} = 0.746 \, \text{kW} For a 150 HP machine : 150 × 0.746 = 112   kW 150 \times 0.746 = 112 \, \text{kW} Step 2: Convert kW into kVA Since the t...

Best 5-Star Inverter Air Conditioners Available in the Market If you’re looking for high-performance and energy-efficient air conditioners, here are two of the best options currently available: 1. Daikin 5 Star Inverter Air Conditioner (1.5 Ton) Technical Specifications Brand: Daikin Energy Efficiency: 5-Star Rating Capacity: 1.5 Ton Noise Level: 32 dB Type: Split AC Special Features: Inverter, Dust Filter Color: White Control Type: Remote Control Voltage: 230 Volts Material: Plastic Included Components: 1 Indoor Unit, 1 Outdoor Unit, Interconnecting Pipe, 1 Remote, 3 Manuals, 1 Warranty Card Batteries Included: Yes (Zinc type, no additional batteries required) Warranty & Support 1 Year on product 1 Year on condenser 10 Years on compressor Key Features Econo Mode: Limits maximum power consumption, ideal when AC and other appliances run on a shared circuit. Power Chill Operation: Quickly lowers room tempe...

🔌 PRCD Plug (Life savior Plug) – Features, Specs & Applications A PRCD Plug is a safety plug with an inbuilt RCD (Residual Current Detector) . Commonly known as a Lifesavior Plug , it protects users from electric shocks by automatically disconnecting the appliance in case of current leakage . Unlike normal plug tops, PRCD plugs eliminate the chances of fatal shocks by limiting current flow through the human body . ✅ Key Features of PRCD Plug Auto Trip Protection – Disconnects appliance automatically on fault, with visual indication. Power Indicator – Shows ON/OFF status. Test Function – Allows checking of circuit safety. Reset Button – Restores power supply after shutdown. Multi-Application Use – Suitable for appliances like: Iron Microwave Water Heater Washing Machine OTG (Oven-Toaster-Griller) ⚙️ Technical Specifications (16A PRCD Plug) Rated Current & Voltage : 16 A / 250 V AC, 50 Hz Power Rating : 3000 W Residual Cur...

Now days due to global pandemic there are people maintaining social distance from other people and people are carrying work at home. They are improving their skills by doing so they are reducing their cost of living as they are only using essential services for their living. They are carrying out following works at their own:- (i)                   They are not using services of maids for routine cleaning works at their home (ii)                 They are cutting their hair at home only no need of barber these days. (iii)                They are making eatable foods which are usually take from outside at their home, which makes the food healthier with same taste and contents. (iv)            ...

Complete Guide to Brick, Plaster, Steel, and RCC Concrete Calculations  When working on construction projects—whether it’s a small residential building or a large-scale commercial project— accurate material estimation is essential. Civil engineers rely on standard formulas and ratios to calculate the number of bricks, quantity of plaster, steel reinforcement weight, and RCC concrete mix requirements . In this guide, we will walk through step-by-step calculations for: Brickwork estimation Plastering requirements Steel bar weight calculations RCC concrete mix design (M15 to M30) Cement, sand, and aggregate ratios with examples These calculations are based on standard engineering practices and IS codes, ensuring that the results are both practical and reliable. 🔹 1. Brickwork Calculations Standard Brick Size in India Nominal brick size: 190 mm × 90 mm × 90 mm Volume of one brick: Volume = 0.19 × 0.09 × 0.09 = 0.001539   m 3 \text{Volume} = 0.19 \ti...

Best Ceiling Fans in India: Types, Features, and Top Brands Ceiling fans are an integral part of every Indian household. Even with the growing popularity of air conditioners, ceiling fans remain indispensable for comfort and energy efficiency. With so many brands and models available in the Indian market, choosing the right ceiling fan can be confusing. In this guide, we’ll break down the types of ceiling fans , their features, benefits, and the top brands in India you should consider. Types of Ceiling Fans 1. BLDC (Brushless DC) Fans with Remote Control BLDC fans are the latest innovation in the ceiling fan industry. Unlike conventional fans, they use brushless motors, which means: Lower power consumption – up to 50% savings compared to normal fans. Longer lifespan – no brushes, no capacitor failures, and no rewinding issues. Remote and app control – many models also support Bluetooth/App control , making them smart home–ready. Value for money – though they co...