Answer / aftab ahmed mazari

There are mostly two types of magnetic pickups for speed
measuring.
1. Passive sensor
2. Actice sensor
In active sensor, hall effect is used to get frequency
signal.

Answer / mithilesh kumar

in power plant it's used for turbine speed(RPM).

please send the sample qustion paper for iocl written test ..

0 Answers   IOCL,

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what is diff between sensors and transducers.explain with ex?

15 Answers  

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What is the cascade control system and where is use in power plant give the detail with block diagram

1 Answers  

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in a power plant main steam flow is volumetric or mass flow? is it required compensation?

1 Answers   Wartsila,

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what is dry leg and what is wet leg?

3 Answers  

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what is the way of measuring air flow in air duct?explaim instruments used and DP creation in line?

3 Answers  

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how u calibrate sox nox co2 co in cemps?what is opacity n HPm?tell the standard parameters of cems?

0 Answers  

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Hi Friends i need Electronics&Instrumentation Engg question papers for BARC written test by coming 20th May 2008 pls post ur use full info to kkumarei@gmail.com. Or for suggestions pls give one missed call to 9962122264

0 Answers   BARC, Wipro,

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why do we use 4-20 ma current why cant o-20ma

6 Answers   Southwest Cheese,

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difference between null and deflecting instrument.

5 Answers   ONGC,

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why we are giving negative supply for vibration sensors?

3 Answers   Shell, Solex,

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what is control valve and how is work

5 Answers   Descon,

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