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Un-Answered Questions { Electronics Communications }

What is a sequential circuit and what is a combinational circuit?

1128


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

1038


How to format a memory card by using memory card?

990


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.

1201


Explain what is meant by virtual ground in the op amp?

944


Why are the 2 input terminals of an op-amp are called as inverting & non-inverting terminals?

1072


How the active power factor correction changes the wave shape of current drawn by a load to improve the power factor?

1043


Explain what is angle and amplitude modulation? What is noise in modulation?

1033


Why the antenna is called passive element?

1124


What is automation industries main category and sub category?

989


Tell me, when a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?

994


Why are using 4ma to 20ma for signal transfer. Why not 0 to 20ma?

982


What electronics are involved to build a device like a guitar tuner where you press a button to get a specific tone?

1043


How does a signal differ from a wave?

1030


What is the difference between masking and non-masking?

1120