Answer / sreenivasulu

wheat stone bridge is used for measuring resistance and
pirani gauges are used for measuring small pressures and
strain gauge is depends on the principle of when strain is
applied to conductor the length increases and resistance
increases

Answer / www.islamqa.com

wheatstone bridge used in many circuits for variety of
purposes , it's main idea is to change 1 resistor of 4
resistors and get this resistance change in form of voltage
change.

Strain gauge is a "pressure sensitive resistance" which
attached to the wheatstone bridge to consist "pressure
transmitter"/pressure monitoring system.

R chnage by pressure as R=L*(ROH)/A , L:LENGTH and A:AREA
are changing by pressure , this leads to R change.

Answer / priya

pirani gauge is explained with the help of wheatstone
bridge circuit.temperature variation is caused by the
resistance changes in case of pirani gauge

Answer / malhotra g singh

WHEATSTONE BRIDGE IS INVENTED BY WHEATSTONE.PIRANI GAUGE
AND STRAIN GAUGE ARE INVENTED BY PIRANI AND STRAIN
RESPECTIVELY.WHEATSTONE BRIDGE IS A BRIDGE WHEREAS PIRANI
GAUGE AND STRAIN GAUGE ARE GAUGES.

In control valves (like feed water control valve) we will give 3 kg pressure and how it controls 110 kg of water pressure?

4 Answers   SSL,

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0 Answers   Hamsco,

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3 Answers   IOCL,

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2 Answers  

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0 Answers  

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What is loop checking ?

10 Answers   Kharafi National, Petrofac, Samsung,

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0 Answers   L&T, Shiv Tech Marine Control,

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0 Answers   KOC,

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0 Answers  

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1 Answers   Pedvak, Steel Plant, Vizag Steel,

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0 Answers   Honeywell, Tata Steel Limited,

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what are the levels of automation?

1 Answers  

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