Basic questions asked in HPCL(instrumentation) in refinery section

1 Answers   HPCL,

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Corona occurs more in winter or rain?

1 Answers   UPPCL,

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Handpump harness water dont go back.Why?

1 Answers   Focus Energy,

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what should be the recommended BDV of an oil transformer???

0 Answers  

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how we can calculate the load appeared on programable logic controller.and what is the method to calculate the scan time of PLC.

0 Answers   Siemens,

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difference between gauges and comparator

0 Answers  

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explain ht breaker in a detailed way??

1 Answers   Reliance,

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speed control by the variation of field flux result in 1- constant power drive 2-variable torque drive

1 Answers  

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why water first pass to sac then sba

1 Answers   ACC,

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Methodology for calibration for ctm.... Explain in simple way pls

0 Answers  

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In an existing power plant (phase I) with step up transformers (3nos) with Ynd1 vector group to the 400KV bus bar,an extension power plant (phase II) with transformers (4nos) with Ynd11 vector group >. what are the consequences of such configuration ,please note that % impedance are also differ i.e. 15% & 10.5% the reason was that auxiliary supply interface is at different voltage levels i.e 400v & 6.6KV in phase i and phase II respectively .please advise ! Thank you !

1 Answers  

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a high voltage electric line for showing a blinking rod but connected a single line..wht is the rods name...and explain its working

0 Answers  

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