Answer Posted / sachin

In an opamp the input impedance is very high because of the
first stage which is dual input balanced output differential
amplifier. Due to this, negligible current flows into the
opamp. This suggests that the potential difference across
the input impedance is zero and if any one terminal is
grounded then the potential at the other end is zero.
However it is called virtual ground as ordinary ground has
zero potential but can sink infinite current whereas virtual
ground has zero potential and can sink zero current.

Give some examples of power electronics applications in the day-to-day life?

1021

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Which register which contains the instruction that is to be executed?

920

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What is parallel data transfer process?

1082

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Explain the main application of scr in electronic field as well as in software field?

1056

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Explain rf?

1031

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I am a B Tech student n am very much interested in science n math.in which site i can find more concept regarding ECE?

1777

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define voltage regulator.

929

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Explain how to convert design gray to binary code?

996

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For high frequency applications will you prefer mosfet or igbt? Why?

1089

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what is a static variable...wht is the size when u give sizeof(struct)

2114

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We are facing the problem of communication failure between seimens drives and ABB DCS. Between drives and DCS on RLM -01 module for communication purpose. We found red blinking i.e error blinking in RLM -o1 module. So we replaced with new one but after one month same problem again came. So again we installed old RLM-01 module. Now also RED blinking is coming but sometimes drives are not tripping. What will be the cause for this problem?

1903

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Explain how many type of resistor are there in diode?

919

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What is instrumentation amplifier (ia) and what are all the advantages?

1160

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What are the advantages of active filters?

1045

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What is DRX? Why do we need it?

1918

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