vignesh


{ City } noida
< Country > india
* Profession * associate software engineer
User No # 96482
Total Questions Posted # 10
Total Answers Posted # 33

Total Answers Posted for My Questions # 38
Total Views for My Questions # 64738

Users Marked my Answers as Correct # 196
Users Marked my Answers as Wrong # 48
Questions / { vignesh }
Questions Answers Category Views Company eMail

Whether the LIGHTNING is AC or DC?

Bhel, IEEE,

9 Electrical Engineering 15751

Based on what the rating of machines are provided??(ANswer should in single word)

Asian Paints, Bhel,

19 Electrical Engineering 16058

Can we put more than one action in a single script???? yes or no.....

BirlaSoft,

2 QTP 4756

Can we record a video in qtp recording??

BirlaSoft,

1 QTP 3083

you are sorting a table using "order by"(descending) clause of a column which contains a null value...whether that row containing null value will come first or last in the output??

BirlaSoft,

2 Oracle General 4850

Hi, i want to do certification in datawarehouse?? which certification is best in current trend?? pls mention the cost also if u can....

 Data Warehouse General 1877

Hi, I am planning for oracle datawarehousing fundamentals 11g certification.. 1Z0-515.. Any having dumps or materials for this.. pls provide me..

BirlaSoft,

Oracle Certifications 2125

Can we able to record the vuser script in UNIX environment?

BirlaSoft, NICT,

3 Load Runner 6601

Explain Process flow in data warehouse??

BirlaSoft,

1 Data Warehouse General 4514

Explain the statement?? ALTER TABLE TABLE_NAME MOVE; What it the use of above statement??

BirlaSoft,

1 Oracle General 5123



Answers / { vignesh }

Question { 8393 }

why dimenstion tables are denormalized in nature ?


Answer

GENERALLY IN DWH, WE DO SELECT QUERY ONLY(99%)..
SO THE DATA ARE NOT NEED TO BE NORMALIZED AS IN DB WHERE WE DO UPDATE,SELECT,ALTER,ETC..

Is This Answer Correct ?    1 Yes 0 No

Question { 3595 }

How can we translate the steps between the Keyword and
Expert Views?


Answer

No Need to translate in it manual... U can do any of them, that is either vbscripting in expert view or do logical thing in keyword view.. the other thing will be automatically translated... for ex, if u did logical opp in keyview, in the runtime itself u can the script in expert view for wat u have done in d keyview...

Is This Answer Correct ?    1 Yes 0 No


Question { 6078 }

How many types of scripts generated in Load Runner?


Answer

LR uses standard ANSI C language for scripting. However, it supports many types of scripting based on the protocols that coming under load test like java,sap,siebel,.net,etc. So there is no standard answer for this question.

Is This Answer Correct ?    0 Yes 0 No

Question { ACC, 4809 }

ru compare the 2 null values?


Answer

IMPOSSIBLE...!!!!

WE CAN'T COMPARE TWO NULL VALUES
COZ NULL MEANS "THE VALUE IS UNKNOWN";
SO WE CANT COMPARE THE UNKNOWN VALUES....

Is This Answer Correct ?    0 Yes 0 No

Question { Sail, 61285 }

why dc power can not be used in transformer?


Answer

The simple answer s induction principle s only applicable for ac...

Is This Answer Correct ?    0 Yes 1 No

Question { Syntel, 13572 }

you r given with 50 tigers.how will you place those 50
tigers in a room.....you can place any no. of tigers in a
room but the number of tigers u place must be an odd number?


Answer

Data is inadequate... we cant how many trials v should take to place the tigers... if two trials r given, there r no of possible ways 2 do it.. for instance, 1 and 49,, 25 and 25.. 5 and 45..etc... question may be wrong!!!!!!!!!!!

Is This Answer Correct ?    0 Yes 1 No

Question { Steel Plant, 9834 }

what is the differnce b/w voltage and current


Answer

current- rate of flow of electrons
voltage-rate of flow of current

Is This Answer Correct ?    0 Yes 0 No

Question { 3643 }

There is no such thing as a Generator. All power generating
devices are Alternator since both generate alternating
current since this is the only way electrical power can be
generated. In "generators" the alternating current is
converted into DC inside the housing of the "generator" in
order to give out DC
Do you agree? If not please educate me. How else is DC
generated if not like above?


Answer

s u r ryt.. every generator vil produce ac at the output..if v want dc, v vil rectify it .. dats all..

Is This Answer Correct ?    1 Yes 0 No

Question { NTPC, 4695 }

1.What is effect of capitance in transmission line?
2. After raising the voltage at receiving end what will
be happen?
3.how we nullify or control the raised voltage at
receiving end?


Answer

1. simple generally capacitors are used to improve the power
factor in inductive load circuits.. here transformers also can
be taken as inductive one.. bcoz they are operating based on
induction principle...
2.increasing the voltage vil cause imbalance in power factor..
3. it can b nullified by providing high resistances along with
capacitors in series at the end...

Is This Answer Correct ?    1 Yes 1 No

Question { Accenture, 3573 }

what is verification & validation?


Answer

verification done at any given phase of coding..
Validation is done at the end....

Is This Answer Correct ?    0 Yes 0 No

Question { 3339 }

hi this toufik here. i am doing my b.e.degree.now i am in
final year and supposed to do a project in this year so i
thinking to control the buchholz relay using software base
means checking the status of transformer oil using
microcontroler, plc or scada. so can i do so...??? alz
suggest me...


Answer

ya toufiq.. i think u can do it.. but it seems in terms of relay, u r required to use more voltage n current.. in this interrupting with micro-processor r controller.. i think it may b difficult..anyway it s a good idea.. analyse ur doubts wit ur staff who know abt mp clearly.. all d best man..

Is This Answer Correct ?    1 Yes 0 No

Question { L&T, 6734 }

Hi Guys,

I have been to L& T last week ..Please find the questions
mentioned below
1)Slowly changing dimension types
2)DML statement
3)DDL statement
4)write a syntax to create database
5) differences between count(*) and count(column)
6) differences between union and union all
7) what is decode
8) what is NVL
9) Arrange the values in ascending order 10,5,20,15,null
10)Primary and surrogate key
11)what is group by clause does?
12)what is difference between truncate and delete
13)what is difference between OLAP and OLTP ?
14)Architecture of Datawarehouse
15)how do you test the data validation from source as (flat
file and xml) to staging tables.
16)what is shedule and time bound

the mentioned above question asked in two rounds.all the
best


Answer

Count(*) will count all records including nulls and count
(column_name) will give count of non-null values only.

Is This Answer Correct ?    4 Yes 0 No

Question { Infosys, 15032 }

Which has more losses, AC or DC??


Answer

tat s not stir effect.. tat s called as skin effect.. AC has more losses...

Is This Answer Correct ?    8 Yes 0 No

Question { Godrej, 7127 }

why spark is produced in mosquito bat?and what are the ways
to reduce it?


Answer

when the switch made ON in bat, a low current will flowing
through the entire bat.. the current is DC., hence when a
mosquito touches the bat, it means it interrupting the circuit
then it get short circuited, the current will flow through the
body of mosquito.. so the mosquito gets burning and hence the
spark..

Is This Answer Correct ?    8 Yes 2 No

Question { TNEB Tamil Nadu Electricity Board, 6949 }

When we use a multimeter, while checking continuity of a
closed circuit , what is happening inside multimeter, how
it is working to produce a beep wheather it is closed or
open.. is there any internaly voltage/current source
inside multimeter?


Answer

Its simple.. every multimeter operates under a battery
source.. it vil just send the current in micro or milli amps
to check the continuity...

Is This Answer Correct ?    2 Yes 0 No

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