Answer / ansari

WPS is Welding Procedure and PQR is Procedure Qualification Record
WPS implies Welding suggestion
PQR implies qualified/approved welding

how determine the capacity of refrigeration system? how we use condenser coils, compressor, capillarity,compressor

1 Answers   AirTech,

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Is copper tube withstand under hard water say as 500 TDS.And is it cleanable by solfamric acid or by tube brushing

0 Answers   Cadila,

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"When you will install a new piston ring, what will be the position of it?"

0 Answers   RRB,

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what is cause of low cfm in duct

1 Answers  

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Why Slag comes on top of weld bead & if ur answer is related to density then think of overhead welding if slag is ligter than weld metal then in overhead welding firstly a laye of slag & then a layer of weld metal must be deposited.

3 Answers   SGS,

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What is the spinning jenny?

0 Answers  

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What valves are fitted in a four-stroke diesel engine?

0 Answers   RRB,

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why we cannot cool the room by opening the refrigerator ?

2 Answers  

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What is the critical temperature of a refrigerant ?

0 Answers  

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What is the purpose of air blow?

0 Answers   RRB,

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What is hammering in steam or water flow pipe line. how it is happening.

3 Answers  

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is there any limit to step up the voltage in transformer???

1 Answers  

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