Answer / meenakshi

commutator mainly facilitates the collection of current
from the armature conductors and also converts the
alternating current induced in the armature conductors into
an unidirectional pulsating dc current in the external load
ckt.this is done by proper switching of current in the
right coil at right time.

Answer / koushik

when working as a motor it collects the current from brush and gives to armature slots.when working as a generator it works as a rectifier.it collects the current from armature and gives to brush in one direction.i.e.current flow is in ine direction.

Answer / manwendra tiwari

Commuitar is work like rectifire .its change a.c to d.c when genretor work it takes armechar curunt corbon slots bruch and change another direation into the load side.

What is LMU and LMDU. in PLCC communication of 132 kv transmission line. is it possible to use only one LMU with out LMDU ?

1 Answers  

---

FOR ELECTRICAL TRANSMISSION TOWER WHAT SHOULD BE THE MINIMUM HEIGHT FROM THE GROUND? AND WHAT SHOULD BE THE DISTANCE BETWEEN THE TWO CONDUCTOR?

1 Answers  

---

How to find Cable size? Caterpillar generator produce (Two generators) 127*2=254 amp at 11 kv . What would be the cable size (XLPE) to supply 256 amp at 11 kv? Air or surrounding Temperature is 32 degree C. Cable will go under ground at 2.5 feet depth. Group Rating Factors is 3 cables. Clearance between cables is 7 cm. Soil Temperature (Ambient) 28o C Soil Thermal Resistivity is 1.2 K.m/W I would like to use 3 separate single core instead of using 3 core cable. Some says I should use three separate single core 120RM cables. Some says 70RM .some says 95. I m totally confused. Is there ant specific rule to determine cable size? What would be the LT cable size to flow 500 Amp current? Ifte My e mail address is ifte13@yahoo.com Anyone please send me the answer to my e mail address, i will be very glad.

1 Answers  

---

why transformer rating is in kva?

11 Answers  

---

when the control mechanism is present for an ammeter(1-10A) and 1A current is apllied what will be the reading of the meter?

2 Answers   GATE,

---

Is there any problem if i connect APFC panel in generator circuit

2 Answers  

---

Dsitrubution transformer minimum IR value

1 Answers  

---

WHERE CAN I GET THE PREVIOUS QUESTION PAPERS OF Govt Polytechnic in deee 2nd year papers

0 Answers  

---

We know no of electron and proton in atom but how many Neutron are thire in an atom ?

1 Answers   Power Grid,

---

what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.

0 Answers   NTPC,

---

What does Magnetic Neutral Axis

2 Answers   Eskom, Genus, Lanco,

---

what are the analog quality input for protection function?what are minimum reqiments?

0 Answers  

---