Answer / nachiket dani

IP65 signifies total protection against penetration of dust
(first digit-6) and protection against water jets from any
direction(digit-5).It does not have a direct NEMA
equivalent but NEMA 5 devices are dust proof and NEMA 4/4X
can withstand water jets.So a device having NEMA 4/5 may be
said to be equivalent-although it is wrong.

why we use 0.2 to 1.0 kg/cm2 output in control valve

4 Answers   GNFC,

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What is live zero and dead zero

2 Answers  

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send me last 5 years questions asked in rrb chennai, for section engineer

0 Answers   RRB,

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what is absolute pressure, gauge pressure and atmospheric pressure?

2 Answers   Mother Dairy,

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please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

0 Answers   HP, Siemens,

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Punj lloyd is coming in our Jadavpur Universtiy campus for campus placement. Please send me some hints about the writtend exam. My email id is subratafriends@gmail.com

0 Answers   IGL, Punj Lloyd Ltd, Shapoorji Pallonji Group(SPCL),

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please tell me five types of fault of control valve and positioners?please

1 Answers  

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there are two candidates p and q in an election.During the campaign,40% of the voters promised to vote for P ,and rest for Q.however, on the day of election 15% of the voter went back on their promise to vote for P and instead voted for Q. 25% of the voters went back on their promise to vote for Q and instead voted for P.suppose,P lost by two votes,then what was the total no. of voters.

1 Answers   GATE,

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7. What are tri-state devices and why they are essential in a bus oriented system

1 Answers  

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Whether the DP transmitter can be utilised in the medium of Vaccum for the measurement of Level?

10 Answers  

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I have a close vessel tank which is under vaccum when in running condition so pl. Provide it's range for dp type tx whose flange to flange distance is 440 mm and density is 1

1 Answers  

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why do 4 mA serves as 0% not 0 mA?

10 Answers  

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