Answer / deenar satam

positive displacement pumps can be of rotary as well as
piston type. the pps which includes piston can be single
double or multistage .
in rotary type p/ps there are vane p/p,internal gear
p/p,external gear p/p,lobe p/p etc.
in positive displacement pps priming is not required.
they can run dry for some period of time.
can handle multiple types of fluids.
can deliver more head than centrifugal p/p. but discharge
rate is less as compared to centrifugal p/p

L&T Marine Aptitude Questions & Answers

0 Answers  

---

How large marine generator supply power to the msb?

0 Answers  

---

what is the classes if shaft

1 Answers  

---

What will happen to an engine with safety system running in critical RPM?

4 Answers  

---

hi, i have completed my b.e. marine could u pls suggest me some job site for marine engineering?

0 Answers  

---

explain the types of pumps?

4 Answers  

---

What is bucket valve??

1 Answers  

---

Give an example each of a shipboard use of an adiabatic process and an isothermal process?

0 Answers  

---

Draw the space diagram for a ten meter long beam simply supported at each end?

0 Answers  

---

what is magnetic amplifier

2 Answers   V Ships,

---

What are the disadvantages and advantages of having a small amount of superheat for a refrigerant vapours entering the compressor suction?

0 Answers  

---

Explain why self closing sounding pipes are used onboard?

0 Answers  

---