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LT Panels
What are the various types of LT panels? Name them.
Nisar shaikh
- Sep 25th, 2011
Properly Earthing and Bus bar side some Gape and properly insulation
Total load Distribution system
Power factor properly Automation system
Properly switch system -
Reactive Power
Why the reactive componet is generated in power system?
bittu123
- Nov 10th, 2011
If alternator is Overexcited, it will deliver reactive power with lagging current while in Underexcited, it absorb reactive power with leading curreent But, it always(under or over-excited) deliver ...
Sagar_upadhyay
- Sep 25th, 2011
In most of the power stations, the generation takes place by synchronous generators. The synchronous generators are doubly excited in nature. When the rotor is fed with a DC field, power is generated....
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What is the action in conductors, electrons or atoms when rotating magnetic field is in contact?
When a conductor placed in a rotating magnetic field, what is the action inside the conductor (basis of electrons /charge) ?
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DG Set
What do you do if your DG Set is not taking load?
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What is the use of control panels in transmission systems?
RAVI KUMAR
- Sep 14th, 2011
control panels are used in substations ... use is for monitoring of power system... controlling of real and reactive power flow is also done from the control panel... in case of occurrence of fault...
rahulr30
- Jun 8th, 2008
Control Panels literally help in controlling power supplied. It helps in protection and cntrols the various CBs and other protection Equipments. It hac Current relays etc to sense the current.I also helps to pinpoint the location of faults in feeders.
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What is watt?
bharath
- Sep 8th, 2011
It is the unit of power and used to specify the rate of electrical energy is dissipated.
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CT ratio
Can anybody tell me that how to choose CT for a specific load? I have a 200kw induction motor, which ratio CT should be installed? Is there a formula or calculation that determines the CT ratio for a load?
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What are the general preparations a candidate should do before attending the inteview
SHATAKSHI
- Sep 2nd, 2011
You should be able to fully explain whatever you have written in your CV.
veena_gyanchandani
- Feb 24th, 2010
First of all You should be confident for yourself.You should know about the company profile in which you are going, and why you want to join that company, what is so interesting about that company?If ...
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Distance Between R,Y,B wire
What is the distance between R, Y and B wires when the line is going from one sub-station to another sub-station?
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Why 3 colors Red, Yellow and Blue ?
Normally we represent the three phases, RED, YELLOW, BLUE for identify the phase shift of the phases.
Why not other colors, any reason for that? Or “R Y B” colors are the basic colors.
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Harmonics
What is the necessity of harmonics in electrical field?
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Why ct earthing should be connected at one end only?
If we connect more than one end what will happen?
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Use of Zig Zag Transformer
what is the purpose of zig zag transformer? . How it is different from normal transformer?
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Form factor
What is mean by form factor of the AC current?
Mohammad Ibrahim
- Jul 21st, 2011
2) In electric motor terminology, a form factor is the amount of rectified current emitted from a direct current (DC) power source and is expressed as a ratio of the root-mean square (rms) value of th...
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How to protect the system from fault current ?
What are contactors and why are they used in circuits can they protect the system from fault current ?
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When we increse load , current drawn from source also increses why ?
shashi kant
- Jul 19th, 2011
when we increase the load current increases because when load is increased power consumption increases and p=sq.root3.V.I.cos q. according to the expression, voltage & p.f. remains the same for a part...
saginala13
- Jun 19th, 2010
Increase in load means, we are utilising more power , and the voltage of many systes is almost constant. so for increasing power current will increase.
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When we connect the capacitor Banks in Series with the circuit
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Editorial / Best Answer
Answered by: cvk
- Oct 6th, 2007
The series capacitor is conected to compensate for the line inductance and thus decrease the line reactance so that more power can be tranferred through the line (EV/X sin(delta)) and thus the system stability can be increased.
cvk
- Oct 6th, 2007
The series capacitor is conected to compensate for the line inductance and thus decrease the line reactance so that more power can be tranferred through the line (EV/X sin(delta)) and thus the system stability can be increased.
its_Kishu
- Mar 10th, 2007
Hello...... The question is about connecting Capacitors in SERIES. Series connection is done for improvin...
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Electrical Engineer Interview
1. what is the different between CGS system and MKS system? 2. When we connect the capacitor Banks in Series with the circuit 3. What is the difference between Earthing & grounding 4. how much voltage is present in neutral resistance?and how much voltage is present in earth resistance... 5. What is the purpose of calculating knee point voltage for Current transformers? 6. What is the voltage drop for...
SURAJTHEGREAT
- Apr 10th, 2011
When capacitor is connected in series with the supply source (dc battery) ,capacitor gets fully charged and as a no current flows to the load!!!! When capacitor is connected in series with the supply source (ac) ,a leading current flows through the load.
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What is thyristor?
saginala13
- Jun 19th, 2010
Hey SCR means Silicon Conrolled Rectifier.........it is used in powersystem applications.
Mohamed saad
- Apr 29th, 2008
in another way of diffenationsthe thyristor can be diffened as a valve controlling flow ( current) to have this flow we have to open this valve ( by the gate pulse) the flow will be continous unless the flow is enough
Electrical Engineering Interview Questions
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