Explain the various types of digital to analog converters?

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What is intrinsic semiconductor ?

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What is the different between analogue & digital communications system?

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How WDM works in wireless system...as we say that it works in optical and signals transmitted in this are light signals...??

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Water boiling point temperature is 100 deg. In which liquid state is convert into the gas state,but in turbine which principle is use by which exhaust temperature is 50-55 deg and is in the stage of steam?

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Define fbus protocol?

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plz do tell me therotically how to make a ckt using a pnp transistor to operate a 24V relay. push button,diodes, resistors,capacitor and one pnp transistors are available.

3 Answers   Siemens,

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Why do we use distinct polarisation (UL-H:DL-V) while uplinking and downlinking rather than same (UL-H:DL-H)?

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Define hold time?

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What is photodiode?

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What is the difference between a hart and a smart transmitter?

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What is voltage commutation?

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