# Author Archive

## Compare positive feedback and negative feedback

The parameter of comparison Positive feedback Negative feedback The overall phase shift 0 or 3600 1800 Feedback signal and the input signal. In phase. Out of phase. Input voltage. Increase due to feedback. Decrease due to feedback.

## What is transposition

Transposition of conductors is meant that the exchanging of the position of the power conductor at regular intervals along the line so that each conductor occupies the position of every other conductor over equal distance. Transposition took

## Eight major equipment in the substation

Equipment used in substation Bus bar: bus bar is a very important component of the substation because it is the common conductor for incoming and outgaining lines. Hence any fault taking place on the bus bar will

## Classification of amplifiers according

Voltage amplifier: it is the amplified where only the signal voltage is amplified i.e. input and outputs are in terms of voltage only. Current amplifier: it is an amplifier where only signal currents are amplified. I.e. input

## Methods of coupling

Resistance-capacitance (RC) coupling It is also known as capacitive coupling amplifier using this coupling are known as RC coupled amplifier the function RC coupling network is two-fold: To pass a signal from one to next To block

## Necessity of coupling

Whenever large amplifier with very good impedance matching is required, a signal stage amplifier circuit will not able to amplify the signal to a large extent. Thus, a number of stages are required for amplification, for this

## What is an indicator?

An indicator is a substance that undergoes a change when the endpoint of a titration is reached E.g.: acid indicators are used to single the end of acid-base titration. Indicators are organic weak acids or bases with

## Application of astable multivibrator

The astable multivibrator is used as the wave generator. It is used as voltage-frequency converter. It is used in pulse synchronization. Since it produces square waves, it is a source of production of a harmonic frequency of

## Explain the frequency stability of an oscillator

Manos table multivibrator has one stable state and one quasi-state. It is also known as one-shot multivibrator or univibrator. It remains in its stable state an input pulse triggers it into its quasi-stable state for a time

## Differentiate between single-walled carbon nano-tube and multi-walled carbon nano-tube

The difference between the single-walled carbon nanotube and multi-walled carbon nano-tube are as follows- Single-walled carbon nano-tube Multi-walled carbon nano-tube SWNT is made up by rolling a graphene sheet into a seamless cylinder. MWNT is made up