What happens to the conductivity of semiconductor with the rise in temperature? Compare with the conductivity of metals.

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for small size, high frequency, the most common core material is a)air b)ferrite c)powdered ion d)steel

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Explain why reversal of phase occurs in a bjt ce amplifier.

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We use two different bands for GSM/DCS communications; GSM900 and DCS-1800. Which one is the better of the two in terms of quality and coverage?

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what is ups and inverters. and how to give battery connections for ups.

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how to prepare a cv?

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what customer problems do fibre channel sans solve?

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What is the internal structure of op-amp and explain each block in brief?

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in which place analog signal and digital signal is applied in IC?

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Can any one some basic data sheets abt the transmitter and gauges..

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Explain resistivity?

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What are the types of commutation with respect to commutation process?

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