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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Energy metering: On the property I am renting, the supply voltage is 2 x 110 volts. These 2 x phases enter a energy meter which then exit the meter to over head lines to my house. Question 1. The meter is single phase 240 volts but is being used as 2 x phase(2 x 110volt), is this acceptable? if not, please give me the reasons. The meter details are as follows: 60Hz 15amp Imax 100 amp Kd 3,6 Wh/R 1 fase 3 hilos Model FX 231. I think it was manufactured in Brasil From this meter, the cables run along over head aluminum conductors,I estimate the cross sectional area to be 25mm diameter, but the neutral is only about 10mm square diameter, which cover a distance of 170 meters and then terminate with an underground cable of 65 meter length, total length = 235 meters. There must be a huge voltage drop over this length. This line is protected with 2 x 200 amp aluminum fuses after the meter, there is no main switch in the distribution board. These 2 phases connect directly onto 2 busbars. Surely the neutral should be the same size as the conductors if not more? Question2. What are your thoughts about this installation, should there be better protection, is the neutral too small? During the night, the lights dim then brighten all the time, this cannot be good for my electrical appliances. In my home, I only have a small electric geyser and fridge, my stove works off gas. But when i use other appliances like the washing machine or microwave oven, the light dim. The internal wiring of this house is done with solid hard drawn copper wires and of course, they have to be under rated. I am a retired electrician by trade, but not on the metering and over head mains side, my experience is on the factory maintenance side of things. Your expertise on these matters will be greatly appreciated. Please inform me how to rectify or make any improvements Kind regards, my power bill is very expensive, so I need to know how to bring it lower. Kind regards, Brian

1 3608

in a live circuit with a light bulb such that the bulb is off by a switch, is the light glows if the switch 2 terminals are both touched by a mouse?

1 3654

why power of fm is weaker than am?

1 3626

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1 1989

in an electronic tri vector meter when the current and voltage sequence changes ? what is the effect of phase sequence on recording of meter

L&T,

1 2321

what is the difference between 3 phase 3wire &3phase 4 wire meter?what is the advantage of 3p3w over 3p4w?

L&T, MahaDiscom,

1 18093

how to calculate the fault in substation

1 2613

wow to calculate the transformer rating(KVA)

1 2378

in 33kv line how much current will be

3 29540

what is the condition for YnD11

Bhel,

2645

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating

1 2484

what is sevice settings for mccb?How can be it setted?

1 2360

why sielent pole is used only in hydro generators and not in turbo generators

2 4298

any idea abt REVERSE METERING concept.........?

1 2321

2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation

1 2383


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What is the height of DA, DAL, DB, DC & DDE tower?

2456


As i want some model question paper in basic computer science and history please send me immediately sir

1964


A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.

1182


what will happen if synchronous machine rotor fed from single phase ac supply 

1815


How can we calculate the motor frame sizes?

3483


I am apply the AAI. So i want electrical sample question paper in technical with answer my id is vijayjobsmart@gmail.com

2780


hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com

1893


hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.

3026


i want bhel placement paper for electrical if anybody having pl send to my id kavitha867@myway.com immediately

2061


Circuit diagram of tube light without starter using electrical choke

4203


xfhnchncv?

1978


Pls mail me utility & Dg related question with answer

1859


hi frds, i m electrical engineer.can i get cdr for electrical engineer if u have then send me on my mail id its jayesh_ee88@yahoo.com.please help me frds

2265


what is the minimum pay scale for electrical engineer (building construction)in kuwait? plz revert back with yrs of experience & pay scale respectively.

2242


can you please send me the technical questions and aptitude questions of honeywell and jindal steel electrical engg. question paper my e-mail ID is(kkesavanraj@gmail.com)

2061