why does mA signal preferred for signal transmission?
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Answer Posted / kush kumar
as we know voltage is noise sensitive ..so if transmission
is in the form of voltage then ll loose the original signal
nd at the reciever side ll not get accurate reading ,,but
in d form of current ..its not affected by noise
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Specific gravity.
Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72
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