Answer Posted / harikumar
Split range Operation
Reverse acting positioner
Bench set not standard
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Give 2 application of quartz crystal used for process parameter measurement.
What are different types of valves?
Specify ideal accuracy of flow element like orifice plate, Ventury, Annubar. Ultrasonic flow meter etc.
i am having information technology branh ....... can i prepare for psu exam
the whole paper was based on Transducers..questions like define repeatability, error,accuracy,precision..den there were many q. on the conversion of Pa to mmHg and other units.. also..der wer few Q. on some level sensors(with diagram)
What you mean by multi stage control vavles?
wich is coming the first HAZOP OR SIL
HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.
How will you test a transistor with a multimeter?
How many interlocks at turbine? Plz explain briefly
draw the block diagram of a level transmitter ?
What is first echo & echo window in radar type level transmitter?
what is piezoelectric transducer?give an example in power plant n state its principle?
can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know
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
