Facts of Electrical Engineering
- Electric Current does not flow in the electrical circuit, only charge flow from a negative terminal to a positive terminal, and we assume that current flow in the circuit from the positive terminal to the negative terminal.
- Electrical Current flow due to the only potential difference.
- In three pin plug earth pin is thicker and longer to provide a low resistance path for leakage current and assured the safety of the electrical instrument.
- An electrical engineer can be asked to calculate the transmission line voltage by looking only at the insulator string because one insulator is about 11kV. Example: If any string has 6 insulators, Then the transmission line voltage will be 66 kV.
- In kW, kVA, and kA, "k" is a small alphabet, not a capital that denotes killo. KW, KVA & KA is wrong to display.
- In any Circuit Breaker making capacity is 2.55 times of breaking capacity.
- The actual rating of Zero watt bulb is 5W to 15W. As the mechanical electrical meter is not much precise hence not measure the low power consumption.
- Ratings of Electrical devices: Transformer & Alternator - kVA/MVA, Fuse - A, Motors - kW/MW, Battery - VA.
- Induction Motors consumed about 70 % of Electrical Energy out of over all produced in the world.
- Indian Train equipment works on 110 V AC.
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