Answer / vikas

there might be various possibilities for low discharge in
pumps..
discharge of the pump mainly depends upon...
speed of pump impeller,blade angle,restriction in
passage.any imperfection in any of the follwing results in
low discharge.

Answer / karthick

i think for centrifugal pump,if the net positive suction
head is low then discharge will be affected.

and also if the pump is not able to raise pressure against
manometric head the discharge will be affected.

Answer / hameedwahab

Speed & NPSH(A), NPSH(R). Leakage etc.

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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Lowest temp in vapour compression cycle in :(Ans:Expansion devices) Contineous welding is type of :(Seam Welding) refrigerant in domestic Refrigerator:(R 134 A) Lowest critical temp of refrigerant:(Freon) Statement....this is .....law:(Avagadros law) Ratio reynold no to prandtl no is:(Pecelent no) if welding is done from right to left then what is the name welding:(Not known) slip gauges are made up of:(alloy steel) clearence between meeting surfaces is due to which gauges: question on rubby laser,rake angle,heat treatment processes,joules law,bell coleman cycle like a/c works on which cycle?

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1 Answers   BPSL, HCL,

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