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Un-Answered Questions { Electronics Communications }

why BTS use 48 dc volt

2018


how does polarised capacitor works?at which situation in circuit it is used

2073


How Passive cards like Back planes to be tested throughly?

1822


what is main difference between gsm & cdma

2110


what is limitation of auto transformer?

2256


how do work current transformer?

2048


working and uses of current transformer?

2049


construction of current tranformer

2006


how many type of network protocol

2130


WHAT IS THE DIFFERENCE BETWEEN BIIS-B AND BISS-C INTERFACE

2590


hi, This is manglam.I have done BE(E&TC). I have been selected for icici po interview on 7th sept.So what type of questions they may ask? If u have any interview questions , plz mail me(vickymanglam@gmail.com). are the gd topics always related with economics?

2248


what is the types of transmission

2036


What is meant by D-FF? What is the basic difference between Latches and Flip flops? What is a multiplexer? How can you convert an SR Flip-flop to a JK Flip-flop? How can you convert an JK Flip-flop to a D Flip-flop? What is Race-around problem? How can you rectify it? Which semiconductor device is used as a voltage regulator and why? What do you mean by an ideal voltage source? What do you mean by zener breakdown and avalanche breakdown? What are the different types of filters? What is the need of filtering ideal response of filters and actual response of filters? What is sampling theorem? What is impulse response? Explain the advantages and disadvantages of FIR filters compared to IIR counterparts. What is CMRR? Explain briefly. What do you mean by half-duplex and full-duplex communication? Explain briefly. Which range of signals are used for terrestrial transmission? What is the need for modulation? Which type of modulation is used in TV transmission? Why we use vestigial side band (VSB-C3F) transmission for picture? When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency? For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit? BPFSK is more efficient than BFSK in presence of noise. Why? What is meant by pre-emphasis and de-emphasis? What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?

2035


what is the eligibility criteria of mico bosch

3340


write power supply application, manufacturing, advantages, cost

2032