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Fire fighting line should be pressure tested at 1.5 times the nominal pressure

hi friends any body please help me i am going to write rrb examination for tecnical trade mech. pls tell me perfect authour name and publicataions for rrb objective type mech engg or any other options to prepare

2 Answers   IUAC, RRB,

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WHAT ARE EARTH MOVING M/CS? WHAT IS BATCHING PLANT? WHAT IS HYDRAULIC JUMP? WHAT IS TIPPER (EARTH MOVING M/C)?

0 Answers  

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what are various part found in vapour absorption machine and its working

0 Answers  

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What are the procedures in paralleling D/G?

0 Answers   RRB,

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Dear Sir, i want to know formula for steel BAR/SQUARE/HEX/FLAT>LENGTH. SUPPOSE I PURCHASE 10 KG OF ROUND BAR OF DIA. 20MM SO WHAT LENGHT I GET. SAME FORMULA FOR HEX/SQUARE.?

0 Answers  

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What type of pump use in boiler F.O. system?

2 Answers   ABC Inc, RRB, Siemens,

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why as atmospheric pressure increases,boiling point also increases?

5 Answers   BARC,

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1] wht is the relation between degree celcius and fahrenhite ? 2] wht is quality and ISO ?

2 Answers   MAHINDRA,

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What is caustic embrittlement ?

0 Answers  

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How to calculate the CFM in the AHU (air handling units.

1 Answers  

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Mention stefan boltzman contant.

0 Answers  

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can any1 suggest me the books for placement papers.

1 Answers   Jindal,

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