Answer Posted / sebastian paul

1.In sufficient available npsh
2.Pump is not primed properly
3.Air or vapour, pockets in the liquid on the suction side.
4.Low voltage resulting in lower rpm
5.Required head being higher then the developed head
6.Impeller vanes clogged up
7.Worn out wearings
8.Viscocity of the liquid not as per specification

What will happen if boiler backfires?

2032

---

8000 Liter Water in 80 degree Celsius will generated how many STEAM ?

1641

---

What ill be the shaft diameter with clearance having a bearing bore is 30mm?

3432

---

for under water excavation works, can i have some standard codes and specifications(international)

1930

---

Explain the cycle of refrigeration system.

2086

---

asked about the power transimmisions and types of power drives and about milling different process types and differnce between straddle milling and gang milling

2058

---

how many work softner filter ,multy media filter ,cartage filter , in r o system

2055

---

How do you reset the circuit breaker?

2032

---

Who built the trans alaska pipelene?

1126

---

Name the carpentry process?

1443

---

how gravity filling machine is designed

2422

---

What do you do when in your duty, ME alarm oil mist detect high density?

2500

---

State the difference between ultimate and proximate analysis of coal ?

1210

---

What are safety considerations in welding job?

1910

---

What do you mean by annealing?

1285

---