What is the input impedence of an OPAMP as an ideal device.

1 Answers   CCIE,

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in a electronic controller why we are using 250 ohm resistance in input signal?is i/p is necessary in control valve when we are using electronic controller give details?

3 Answers   IOCL,

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What is deffrence between Battery and capacitor

3 Answers   Siemens,

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can we create an interrupt in plc through scada?

0 Answers   Glensol, TATA,

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i/p converter always for supply pessure from 3~15 psi only !! And from where this converter bleed the air.

2 Answers  

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How to adjust the zero & span of a control valve from the posiitioner(MIL)?

1 Answers   Bhel, SMC,

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how to overhaul control valves.what are the proper procedures.

1 Answers   Jindal, QAFCO,

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How does electro magnetic pump works ?

1 Answers   IGCAR,

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if in a level tx height is given, how u calculate the ranges of the tx?

2 Answers   Bombay Rayon Fashions, Invensys,

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Give me a simple formula to calculate the bore of orifice plate with datas avilable instead of BS 1040.I want to calculate the approximate bore size only.

0 Answers  

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We are used ABB 800xa 5.1.please tell me how to instrall this.

1 Answers   TCCL,

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what are the steps to commissioning a DCS system?

2 Answers   BGR Energy,

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