muthuvel


{ City } bangalore
< Country > india
* Profession * electrical design engineer
User No # 91906
Total Questions Posted # 11
Total Answers Posted # 16

Total Answers Posted for My Questions # 9
Total Views for My Questions # 34614

Users Marked my Answers as Correct # 93
Users Marked my Answers as Wrong # 54
Questions / { muthuvel }
Questions Answers Category Views Company eMail

Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?

 1 Electrical Engineering 4078

Why cannot we insulate HT over head cable to avoid ionization of air around the HT Cable?..By this we can minimise corona loss also..

 1 Electrical Engineering 2733

Give me clear explanation.What is the Different Between Load break switch and Vacuum circuit breaker

 1 Electrical Engineering 3141

Can we Co-ordinate relay in Load Break switch?

Bhel,

Electrical Engineering 1475

what is the illumination level required for child play area?

 Electrical Engineering 1603

How to Design green buildings services? What is the advantage to design green building?

 Electrical Engineering 1362

Can we pass 11kv power in 1.1kV voltage grade cable.If not why?.

 3 Electrical Engineering 9788

Is only insulation the difference between High voltage and Medium voltage cable?

 1 Electrical Engineering 3000

Weather power factor correction needed for synchronous motors?

 1 Electrical Engineering 2789

Formula to calculate fault current flowing in the neutral line?

 1 Electrical Engineering 3201

hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?

 Electrical Engineering 1444



Answers / { muthuvel }

Question { 6605 }

OHMS LAW


Answer

At a constant Temperature the Voltage Drop across the resister is directly proposal to the current flowing through the resister

Is This Answer Correct ?    0 Yes 2 No

Question { 3i Infotech, 8633 }

A contract is to paint 3 houses. Mr brown takes 6 days to
paint a house. Mr black takes 8 days and Mr blue 12 days. Mr
brown leaves for a vacation after 8 days. Mr black works for
6 days from then.How many days would Mr blue require to
complete the contract?


Answer

2 days

Is This Answer Correct ?    2 Yes 1 No


Question { Amazon, 7332 }

From 7:00 AM to 11:00 AM it rained 2.25 inches. At 11:00 AM
the rain increased to fall at a rate of 1.25 in. every two
hours. How many inches of rain landed on the ground by 5:00
PM?

a) 7
b) 9.75
c) 6
d) 3.25
e) 7.125


Answer

9.75

Is This Answer Correct ?    6 Yes 11 No

Question { 4478 }

what is the function AND aplication of CBCT?


Answer

The function of Core balanced current transformer is to detect the unsymmetrical current flow in the line due to earth leakage.It can be applicable in Earth leakage relay.

Is This Answer Correct ?    3 Yes 0 No

Question { 4427 }

In Panels Main Incomer considered should be TPN or FP?


Answer

If it is interlocked with DG side It Should 4P otherwise it can be TPN

Is This Answer Correct ?    5 Yes 0 No

Question { 6080 }

Can I use 1 phase power supply to run 3 phase motor? If yes, how?


Answer

No, 1 phase power supply can excite one winding only.But 3
Phase motor having 3 windings for that it Requires 3 Phase
supply...

Is This Answer Correct ?    8 Yes 2 No

Question { 9730 }

why transmission is done in
delta system


Answer

In Transmission of Electrical Power,There is no need of Single Phase Output.The neutral is required where ever the Single Phase output is required.And If it is Star system means
we are required to give Three phase Four wire It is economically not good.So only Power System Always having Delta System in Transmission and Star System in Distribution This is very small basics of Transmission and Distribution System.

Is This Answer Correct ?    15 Yes 2 No

Question { Honeywell, 7465 }

Why there is a current in neutral line


Answer

If the power system dont have balanced load distribution
between the phases(R,Y,B),The neutral line will get flow of
current. The load distribution(R=Y=B)for the Phases should be
equal
then only the power quality will be high and the Neutral
current will be 0 too...

Is This Answer Correct ?    24 Yes 1 No

Question { 10746 }

If two transformers same rating(11KV / 440V)connected in the
same primary line(11KV), can we connect(bus coupler)
secondary side directly or need a synchronization????


Answer

No,If you connect Bus coupler between the secondary sides of
transformer.. Trans will get parallel operation.This will not
be possible we cannot able to make parallel
operation,synchronise the transformer to make that all the
elec characteristics should be equal for the transformers.

Is This Answer Correct ?    4 Yes 4 No

Question { 5868 }

what is the difference between MCB and MCCB?


Answer

mcb-miniature circuit breaker its bi metal trip type cannot able to co-ordinate the relays,small size,using for small loads.

Mccb-Moulded case circuit breaker can able to co-ordinate relays,here trip coil is separately provided for tripping action,large size and using for heavy duty

Is This Answer Correct ?    4 Yes 0 No

Question { ACC, 10080 }

why Transformer and DG rating capacity is in KVA


Answer

Actually Dg and Transformer Supplying Apparent power only . At the load point only power is segregated by real and reactive power.The Apparent power measured by the unit of kVA(Kilo Volt Ampere),the True power measured by the unit of KW,the reactive power measured by the unit of kVAR(Kilo volt ampere with reactive component).For that reason only DG and Transformer ratings are in KVA.

Is This Answer Correct ?    4 Yes 3 No

Question { 3423 }

How much UG cable size should i use so as to accomodate a
ground + 2floors house.
A 1.5ton AC & geysers(2) in each floor with lightings


Answer

As per your details given here g,1&2 floors are having 2
apartments so totally 6 apartments for that at-least we
required 18+9(geyzer)+9(ac)+2(pump)=38kw

so the full load current is 65A for this 3.5cx35 sqmm
al Cable is enough.If we consider Voltage Drop Cable
size will get more(If the length is more)...

Is This Answer Correct ?    1 Yes 1 No

Question { 3423 }

How much UG cable size should i use so as to accomodate a
ground + 2floors house.
A 1.5ton AC & geysers(2) in each floor with lightings


Answer

As per your details given here g,1&2 floors are having 2
apartments so totally 6 apartments for that at-least we
required 18+9(geyzer)+9(ac)+2(pump)=38kw

so the full load current is 65A for this 3.5cx35 sqmm
al Cable is enough.If we consider Voltage Drop Cable
size will get more(If the length is more)...

Is This Answer Correct ?    1 Yes 0 No

Question { 5970 }

hello every one,

what is the difference between the Kvar and farads, Rating
on Power capacitor is for eg: x kvar, and normal capacitor
is eg: x farads.

what is the relation between these two?


Answer

kvar-kilo volt ampere with reactive component
farads-unit for capacitor

a set of x farad capacitor can develop y kvar capacitor bank
for power factor correction.
kvar-unit of reactive power developed by capacitor bank for
power factor correction

kva2=kw2+kvar2

Is This Answer Correct ?    3 Yes 2 No

Question { 15560 }

when we should use Central Battery system and UPS system and
why? in other words, what are the differences between the
two systems?


Answer

Application wise both are same.In CBS having
rectifier,battery,
battery charger,inverter all these thinks in build.

In Ups Battery is separated.

CBS-used for large power requirement
UPS-for small power requirement

Is This Answer Correct ?    11 Yes 25 No

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