Why vestisial side band is used in TV Signal Transmission?

supersindhu

 Profile Answers by supersindhu Questions by supersindhu

• Sep 12th, 2014

To reduce bandwidth vestigial side band is used

kumar praveen bodu

 Profile Answers by kumar praveen bodu Questions by kumar praveen bodu

• Mar 23rd, 2010

Television broadcasting requires both amplitude as well as frequency modulation AM for picture and FM for sound, so we require larger bandwidth to broadcast in order to say 5MHZ for each individu...

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Why we need biasing for Transister, FET and MOSFET.?What is the importance of the biasing in transister circuits.

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microelectronics  

 Profile Answers by microelectronics Questions by microelectronics

• Member Since Oct-2009 | Dec 25th, 2009

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Biasing of transistor circuits is done for making it work in the desired region of operation.?

supersindhu

 Profile Answers by supersindhu Questions by supersindhu

• Sep 12th, 2014

Biasing is required to make transistor in active mode

Sagar21p

 Profile Answers by Sagar21p Questions by Sagar21p

• Oct 7th, 2010

Biasing means operationg the transistors in a particular region it could be either active(linear),cuttoff(off swith),saturation(nonlinear)For BJT*active region it acts as an amplifier EB jn is FB and ...

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Give examples of circuit protecting device apart from fuse, circuit beaker, relays, lighting arrestor, switch gears.

Justin

• May 5th, 2013

A zener diode, for smaller amounts of voltage regulation.

gorakh anna pandhre

• Apr 18th, 2013

Opoto-isolaters

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meemi

• Jul 24th, 2019

B is register.so adressing mode for PUSH B is Register adressing mode

RAMPRIT KUMAR

• Jan 31st, 2018

Direct addressing mode

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Thermistors Resistancea) increases as heat increasesb) decrease as heat increases C) remains constantd) It is nowhere related to heat.

devworx

• Jan 18th, 2015

Can be Ntc ( N - negative) as R
and Ptc (P - positive) as R

kesavamoorthy

 Profile Answers by kesavamoorthy Questions by kesavamoorthy

• Apr 6th, 2011

To easy to remember when you keep this formula in your mind.where,ΔR = change in resistanceΔT = change in temperaturek = first-order temperature coefficient of resistanceThermistor is clas...

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What is the difference between inductance and resistance?

pradeep

• Jun 2nd, 2012

As resistance dissipates energy in the form of heat and
Inductor stores in the form of magnetic fields and hence
Two different energy is obtained by the two

ANUSHA MANEPALLI

• May 4th, 2012

RESISTANCE:It is the property of the material by which it opposes the flow of current through it. the resistance is denoted by r and measured in ohms.

INDUCTANCE: It is the element in which energy is stored in the form of electromagnetic field. The inductance is denoted by l and measured in Henry

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What is the another name of SCR?

Abhijeet S. Supade

• May 12th, 2017

Thyristor

parthiban s

• Apr 18th, 2017

Thyresistor & jFET, mosFET are thyresistor family

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Why BJT is known as current controlled device and FET is known as voltage controlled device?

swathi

• Apr 9th, 2015

In BJT we give input as a current to the base so it operates taking small input current signal and gives large output current signal so it is called current controlled.
in FET we give input voltage signal to the gate so the output will be of current signal so it is called voltage controlled device.

uzipereg

 Profile Answers by uzipereg Questions by uzipereg

• Jul 30th, 2011

For Active BJT: Ic = BETHA * Ib
(the collector/output current is controlled by the base/input current)

Saturated MOSFET: Id= 0.5*u*Cox*(W/L)*Vod, where Vod is the overdrive voltage: Vod= Vgs - Vt
(the drain/output current is controlled by the overdrive voltage)

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Eng.Daudi

• Dec 27th, 2014

16 mosfets

rucha thakur

• Dec 18th, 2014

One

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rajashree

• Aug 24th, 2011

Microprocessor is an ic chip in a micro controller which performs various logical operations. micro controller is a device which contains microprocessor,input output ports,counters,timers etc...

darochg

 Profile Answers by darochg Questions by darochg

• Jul 19th, 2010

Microcontollers are application specific, while microprocessor is a multipurpose device which needs memory and i/o devices to be interfaced with.up+i/o devices+ memory= uc

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What is Modulation?Why we Require Modulation?

Ankush Bisht

• Jul 11th, 2015

It is the process of mixing the data s/g with carrier s/g
It is required so that to travel the s/g up to a long distance

NAGA TEJA

 Profile Answers by NAGA TEJA Questions by NAGA TEJA

• Mar 16th, 2015

By varying the characteristics of carrier signal in accordance with the instantaneous values of message signal....

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Avinash

• Aug 30th, 2017

Buffer

uddhav kumbhar

• Nov 12th, 2016

Decoder/buffer integrated circuit

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Design binary to gray code converter

tanuja

• Dec 22nd, 2012

First write 1 then 1 EXOR 1 then 1 EXOR 1 THEN 1 EXOR 1
so answer is 1000

praveen

• Nov 28th, 2012

Q: Where we use binary to Gray code and vice-versa...?

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Vinayaka Eshwar Naik

• Jan 14th, 2018

1) Indicates impedance is high at input and reduces towards output
2) Indicates direction of current flow

rucha thakur

• Dec 18th, 2014

ALU + BUFFER =Op-Amp i.e. if we cut Op-Amp symbol vertically from middle, then we get symbols of two components. They are ALU & buffer.

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Why 440volts instead of 660volts in 3 phases of supply system?

Asim Bilal

• Jun 22nd, 2017

It is neither 440v nor 660v, it is 381v by formula 220v*underroot 3=381v

Sankareshwaran V

• Mar 13th, 2017

Their should always be a return conductor to close the circuit, so in 3phase one of the phase act as a return conductor.

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Umer Farooq

• Sep 16th, 2014

PLC is programmable logical controller which individually perform while DCS consists of number of PLC's, so the control is distributed to these PLC's

muhammed hashif

• Oct 2nd, 2011

plc stands for programmable logic controller.dcs stands for distributed control system.functions of plc and dcs are same.both are using for as a instrumentation controller.but dcs are very advanced,it...

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Nivetha

• Jun 20th, 2016

BJT is a current controlled device, where Ib used to drive the BJT either ON or OFF, a MOSFET is a voltage controlled device, the gate voltage used to control the switching activity.

Harshitha P K

• May 7th, 2016

BJT is a current controlled device, where the base current (Ib) is used to drive the BJT either ON or OFF, whereas, a MOSFET is a voltage controlled device, the gate voltage is used to control the switching activities.

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sukisudha  

 Profile Answers by sukisudha Questions by sukisudha

• Member Since Oct-2007 | Nov 21st, 2007

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• there are three types of materials. they are conductor , semi conductor and insulator.
• where the semi conductor lies between the other two. ie. controlled conduction is possible in semi conductor.
• thats why it is preferred in electronic devices.
• A PN junction is formed in all the three types of materials. but in semi consuctor the junction is very thin and easy to break it with the very low voltage.

indranillahiri

 Profile Answers by indranillahiri Questions by indranillahiri

• Nov 2nd, 2011

Semiconductor devices are made with semiconductor materials like Silicon, Germanium ,having the electrical properties of both Conductors and insulators. For Example pn junction diode, BJT, MOSFET, SCR etc. They are mainly used in Switching and Amplification purposes.

AKSA

• Oct 10th, 2011

The semiconductor devices are the devices which stand in between the insulators & conductors.
It have medium amount of electrons.

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How does a Signal differ from a Wave

seshu

• Oct 20th, 2015

Signal satisfies Dirchelet's condition where as Wave does not satisfy.

Suarabh

• Sep 19th, 2015

Signal is the information which is to be transmitted but a wave is used to represent the signal

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What is the formula for power gain when input gain & output gain is given?

Amlaku Yalew

• Aug 4th, 2017

=out put gain/input gain

samarth moudgalya

• Jul 28th, 2017

Power in dB is 10log{Output power/input power)

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