M&MA

Meaning of Satellite & Basic concepts: Satellite: "satellite is object which rotates around some body due to the effect of gravitational forces" . OR "A  satellite is an object  which has been  placed  into orbit by human endeavor" .

Multiplexing Definition and types: Definition: Multi means 'Many', Plexing means ' having parts or units ' combinely latin meaning suggest this but in reality this term is used for multiplexing of signals in telecommunications   " Multiplexing is the procedure in which numerous Data Streams, originating from diverse Sources, are joined and Transmitted over a Single Data Channel or Data Stream."

Wavelength division multiplexing (WDM): Wavelength division multiplexing (WDM) Definition: " Wavelength-division multiplexing (WDM)   could be a   technique   of mixing  multiple signals on  optical device  beams at  varied  infrared (IR) wavelengths for transmission  on  fiber optic media.  every   optical device  is modulated by  AN   freelance  set of signals. Wavelength-sensitive filters, the IR analog of visible-light color filters,  square measure  used at the receiving  finish" .

IP Address Subnetting & CIDR IP Address Subnetting & CIDR

Content Management System   Content Management System

Applications of Microwave Engineering The majority of today’s applications of RF and microwave technology are to wireless networking and communications systems, wireless security systems, radar systems, environmental remote sensing, and medical systems.

STAR DELTA connection Diagram and Working principle Descriptions: A Dual starter connects the motor terminals directly to the power supply . Hence, the motor is subjected to the full voltage of the power supply . Consequently , high starting current flows through the motor . This type of starting is suitable for small motors below 5 hp (3.75 kW) . Reduced-voltage starters are employed with motors above 5 hp. Although Dual motor starters are available for motors less than 150kW on 400 V and for motors less than 1 MW on 6.6 kV . Supply reliability and reserve power generation dictates the use of reduced voltage or not to reduce the starting current of an induction motor the voltage across the motor need to be reduced. This can be done by 1. Autotransformer starter , 2. Star-delta starter or 3. Resistor starter . Now-a-days VVVF drive used extensively for speed control serves this purpose also.