Answer / gautam_etrx.engg

It is "Sillicon Controlled Rectifier". It's a four layer
device (pnpn) used for controlled firing.

Answer / balaji

SCR is northing but silicon controlled rectifier used to
convert the AC to Dc upto 6.5 kv.

Answer / gaurav

SCR is basically a Silicon Controlled Rectifier,
4 layer device pnpn
3 terminal device i.e, Anode , Cathode and Gate.
When anode to Cathode is Forward bias only that time it
Conducts..otherwise it remain in Off state.
Gate is applied to reduce the Forward voltage so that it
conducts for small applied voltage.

Answer / anand

.Silicon
controlled
rectifier...It
is mainly used
for reducing
firing angle @ @
applic like soft
starter's etc

The Design Calculation of Level Transmitter For Different Structure open & Closed Vessel, Eg. Diff. Level Tx., Capacitance For Continous Operation

0 Answers   Reliance,

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which processor is used in dcs.

0 Answers   ABB, Wave Distillery,

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Any Transmitter Range (Span value) start from 2?

1 Answers   Exxon Mobil,

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An equipment is certified for EEX, IA, IIC, T6, what do you under stand by this.

3 Answers   ADMA OPCO,

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What is super thermocoupal?

0 Answers   Emco,

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For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

0 Answers  

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What are different types of control valves?

0 Answers  

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what is working principle of presure and temperature guage?

4 Answers  

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Explain why plc require in analog input 4-20amp & 0-10 volt?

0 Answers  

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1. what is 3 point calibration & 5 point calibration? 2. If we use hart communicator to set the LRV & URV of a smart transmitter, did we calibrate the transmitter? why? 3. Make a complet list if meterials needed to properly connect a pressure gauge to a steam pipe using 1/2 inch stainless steel tubing. The gauge connections is 1/2 inch NPT-M and the steam pipe tap has a 1/2 inch female coupling, compression fittings are use. 4. What are the tools in loop checking? 5. What would the ISA symbol of a square root extractor look like? 6. What would you do to completely prepare for the configuration? 7. What safety measures must you undertake when doing configuration? 8. what are the two most commonly use programming languages used when we configure a PLC? 9. What would you do if you accidentally skipped a step in the configuration procedure? 10. How would you know if the configuration were sucessful? 11. Name at least 3 selections available when we configure the burnout protection of a controller?

3 Answers   EI Electrotechnical Institute,

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In bently nevada vibration monitoring system,what is the reason to maintain the Resistance of the probe + extension cable equal to 95 ohm? If possible explain the basic principle of measurement with detail electronic circuits.

0 Answers   Essar,

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what is the relation between flow and pressure.for example relationship between level and pressure is p = phg like that i want ans for this question.and also how to calculate orifice sizing and flow transmitter. pls some one ans for this questions.

3 Answers   Orchid, SRF,

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