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Answer Posted / divyanshu dagar
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The output of the rectifier pulsating in nature, it consists of a desired dc component of voltage and unwanted ripple components. These ripple components are removed by placing filter circuit at the output of the rectifier.
What are rlc circuits?
Why circuit turn off time should be greater than the thyristor turn-off time?
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?
Explain at what voltage does land line telephone operate?
What is woking principale of Profibus nd how it transfer data?
what is an operational amplifier?
in govt polytechnic lecturers tell me what is the expected cut off for ece after the interview list announced
Give the typical value of bias current for ca741 operational amplifier.
What is a p-n junction diode?
Explain what is angle and amplitude modulation? What is noise in modulation?
define conversion time.
Why are active filters preferred
State the differences between fir and iir filters?
can a machine with a single DNS name have multiple IP address?how could this occur.
