Answer Posted / amit patel

In case of Level measurement boiler drum , if we are not
used impluse tube then steam directly contact with
transmitter diapharm which getting damaged beacuse of TX
diapharm can withstand maximum temp around 150 degree
centigrade. So when steam flow carrying in impluse tube
then its temp comes down due to atm temp and becomes
condensate water.

Identification of control valve parts.

2109

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What is the constant voltage unit?

1133

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What is zener diode? What is voltage regulator?

1145

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What are the application of bernoulli’s theorem?

1199

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Reason for capillary type dp level transmitter fluctuation

2026

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what is the vital subject for scoring bhel exam&what is the question pattern

2472

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Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72

2275

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how can i check vortex shedder bar it is ok? if there is ohms condition are shown correct?

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How will you calibrate PID controller? explain with example.

2488

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can u briefly explain aboutan aryton shunt multirange DC ammeter?

2786

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wich is coming the first HAZOP OR SIL

2810

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How to calibration a control valve?

1206

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what is the different between deflection type measurement and null type measurement in RTD?

1944

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In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

1875

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what would be the minimum flow rate that we can measure on rotameter..?

2144

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