Answer / aissa

why we use sensing type(NPN)on a vibration monitring
system not a (PNP)sensing type
ANSWER
it's a matter of THE COST since NPN technology is less than PNP

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DEAR SIR/MADAM MY NAME IS ARKAPROVA BHATTACHARYYA.I AM A FRESHER INSTRUMENTATION ENGINEER.CAN YOU PLEASE SEND SOME QUESTION PAPERS OF GRADUATE ENGINEER TRAINEE EXAM OF DVC(DAMODAR VALLY CORPORATION).MY EMAIL IDs ARE arka_aec@rediffmail.com.

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