Electrical and electronics engineering
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Electrical engineering

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@electricalandelectronics09
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Forwarded from Engineering Update
In UPS system which of the following device is used for converting dc voltage to ac output voltage:
Anonymous Quiz
7%
Chopper
12%
Cyclo-converter
64%
Inverter
17%
Rectifier
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Which of the following meter is used to measure speed in electrical machine
Anonymous Quiz
18%
Rotameter
12%
No option is Correct
59%
Tachometer
12%
Synchroscope
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A magnetic coupling is a device that transmits torque between two shafts via a magnetic field, eliminating the need for a physical mechanical connection. This technology is widely used in various propulsion systems, such as vehicles and remotely operated underwater vehicles, to transfer torque from electric motors to propellers.

ELIX Wireless employs Magneto Dynamic Coupling (MDC) technology, which integrates rotating magnets with a built-in motor generator system for wireless power transfer.

A similar technology is showcased by the WiPASS Magnetodynamic Wireless Power Transfer (WPT) system. This system features a transmitter that generates a time-varying magnetic field, while the receiver consists of a magnet that moves within a coil. The changing magnetic field produced by the transmitter applies a force or torque on the magnet, causing it to move or rotate.

#MagneticCoupling #magnetodynamicWPT @electricalandelectronics09
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Non-Conventional Power Plants

The non-conventional sources of energy are being continuously produced in nature and are not exhaustible. Examples include wood, geothermal energy, wind energy, tidal energy, nuclear fusion, biomass, solar energy etc.

The following are the power plants from non-conventional sources of energy.

Thermoelectric Generator

Thermionic generator

Fuel-cells Power Plants

Photovoltaic solar cells Power System

MHD Power Plants

Fussion Reactor NPP Power System

Biogas, Biomass Energy Power system

Geothermal Energy

Wind Energy Power System

Ocean Thermal energy conversion (OTEC)

Wave and Tidal Wave

Energy Plantation Scheme

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Forwarded from Engineering Update
How is electricity made at a power plant?
Anonymous Quiz
12%
Motor
76%
Generator
9%
Coil
2%
Wire
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Blockchain Technology

πŸ‘‰ Blockchain is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system.

πŸ‘‰ A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain.

πŸ‘‰ Each block in the chain contains a number of transactions, and every time a new transaction occurs on the blockchain, a record of that transaction is added to every participant’s ledger.

πŸ‘‰ The decentralised database managed by multiple participants is known as Distributed Ledger Technology (DLT).
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Which of the following circuit elements stores energy in the electromagnetic field?
Anonymous Quiz
10%
Condenser
45%
Inductance
8%
Resistance
37%
Capacitance
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Forwarded from Engineering Update
An alternator converts __ energy into ____energy.
Anonymous Quiz
14%
Potential to kinetic
66%
Mechanical to electrical
21%
Electrical to mechanical
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Forwarded from Engineering Update
The ______ allows current to flow one way in the rectifier assembly.
Anonymous Quiz
78%
Diode
6%
Thyroid
13%
Electromotive force (EMF)
3%
Counter-electromotive force (CEMF)
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πŸ‘‰Voltage and Current Values in Three-Phase Systems πŸ‘πŸ‘

πŸ”‹πŸ”ŒWhen we measure voltage and current in three-phase systems, we need to be specific as to where we’re measuring.

πŸ”‹πŸ”ŒLine voltage refers to the amount of voltage measured between any two line conductors in a balanced three-phase system. With the above circuit, the line voltage is roughly 208 volts.

πŸ”‹πŸ”ŒPhase voltage refers to the voltage measured across any one component (source winding or load impedance) in a balanced three-phase source or load.

πŸ”‹πŸš¦πŸ”ŒFor the circuit shown above, the phase voltage is 120 volts. The terms line current and phase current follows the same logic: the former referring to the current through any one line conductor, and the latter to the current through any one componentπŸ”₯

πŸ”‹πŸ‘‰πŸ”ŒY-connected sources and loads always have line voltages greater than phase voltages, and line currents equal to phase currents. If the Y-connected source or load is balanced, the line voltage will be equal to the phase voltage times the square root of 3.πŸ‘πŸ‘πŸ”₯πŸ”₯
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