Answer / krishnamurthy

Keep the boiler furnace always in negative draft (atleast -
5 mmwC)

Answer / s.khan

boiler can be prevent of back pressure by a good draft
system,i.e balance draft.due to induced draft there is a
negative pressure in furnace but it is not good for
efficient boiler,because of in this way hot gases goes out
tgrough stack very fast without giving complete heat to water.

Why riser is made cylindrical

2 Answers   TCS,

---

Stress produce strain or strain produce stress.....?Explain?

9 Answers   Behr, Bhel, ONGC,

---

What is the purpose of piston rings?

2 Answers   RRB,

---

For a high pressure/ high temperature multistage pump (Boiler Feed Water Pump), what is the average life of mechanical seal? Does life of DE and NDE differ, if differ, how much? Why?

0 Answers  

---

in tpp how steam pr. decreases from steam drum to main steam line

0 Answers  

---

---

why 4*c water's density is higher ?

5 Answers   Essar,

---

What are the types of sensors?

0 Answers  

---

Tell Me what is the Requirement of Cooling of Hydrulic Oil in Hydraulic system

3 Answers  

---

How can we find out the weight of metal sheet with the help of its dimensions.

8 Answers  

---

effect of temperature on stainless steel at temp(500C-750C) in respect of the following properties-required for silencer application 1.thermal conductivity 2.heat conduction 3.mechanical strength 4.temperature to weight ratio with values

0 Answers  

---

if there is 30% loss in cooling of an ic engine then to reduce that it is ok to supply 30% less fuel? why?

1 Answers  

---

Two pumps connected in series , what will be the shape of QH curve ?. What will be the shape if they are in parallel.

1 Answers   Ferrari, IGCAR,

---