Today's Question 12
Answer : B
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Answer : B
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Solutions For Today's Question
Hi Friends,
As per the many requests regarding recieved the solutions for Today's Question Column,We are planning to provide the solution as soon as possible.
We will try to provide Solutions of all the questions every month end for the question posted in that particular month as compilation for each and every question has become very difficult.
We will try to improve to post answers every week when we develop our team. So kindly Bear with us.
And regarding objective question sections which was asked by one of our follower, we are planning post online exams(IES Standard) in future when we have subscribers more than 1200.
And regarding objective question sections which was asked by one of our follower, we are planning post online exams(IES Standard) in future when we have subscribers more than 1200.
Thanks
Gopi Srikanth
Bonus Question
Bonus
Question:
A Power station has three section Busbars with 11 KV generators on the ring system as under:
Section 1: Two Generators of 30 MVA & 20 MVA with 0.15pu & 0.12pu reactance respectively.
Section 2: One Generator of 60 MVA and 0.2pu reactance
Section 3: Two Generators of 30 MVA & 60 MVA with 0.18pu & 0.2pu reactance respectively.
Sections 1 & 2, 2 &3, 3 & 1 are connected through reactors of rating 60 MVA,90 MVA & 80 MVA with reactance 0.2pu, 0.3pu, 0.24pu respectively.
A Power station has three section Busbars with 11 KV generators on the ring system as under:
Section 1: Two Generators of 30 MVA & 20 MVA with 0.15pu & 0.12pu reactance respectively.
Section 2: One Generator of 60 MVA and 0.2pu reactance
Section 3: Two Generators of 30 MVA & 60 MVA with 0.18pu & 0.2pu reactance respectively.
Sections 1 & 2, 2 &3, 3 & 1 are connected through reactors of rating 60 MVA,90 MVA & 80 MVA with reactance 0.2pu, 0.3pu, 0.24pu respectively.
- Determine the fault Current when a
3 -phase Symmetrical fault occurs at the far end of the feeder with a 0.05pu reactance
& 0.01pu resistance
on 30 MVA base, connected to Section number Three.
- Calculate the current Supplied by
60 MVA Generator on section 3 bus under fault condition.
Answer:
- 17800 A
- 6760 A
For Solution Click Here
Today's Question 1
Question No 1:
A Station operating at 33KV is divided into two sections A & B interconnected through a reactor X. Section A has Three Generators each 15 MVA having 15 % reactance. Section B is fed from a grid through a 75 MVA transformer with reactance 8 %. The Circuit Breaker have a rupturing capacity of 750 MVA. Find the reactance of the reactor X to prevent the breaker Being overloaded if a 3- phase Fault occurs on outgoing feeder connected to A?
Answer:
1.259Ω
Solution Will Be Provided On Request
Today's Question
Hi Friends,
This is a new column to be started from Sep 19 -2014 where i will be providing one question every day morning which i feel important during my practice.
The questions are probably not from previous GATE & IES only text book problems.
Since GATE & IES are already available with many people i will try not providing it here unless its very important.
I will be providing the solution the same day night.
You Can Please post in the comments still any questions you find important.
Thanks
IESGATEWAY
This is a new column to be started from Sep 19 -2014 where i will be providing one question every day morning which i feel important during my practice.
The questions are probably not from previous GATE & IES only text book problems.
Since GATE & IES are already available with many people i will try not providing it here unless its very important.
I will be providing the solution the same day night.
You Can Please post in the comments still any questions you find important.
Thanks
IESGATEWAY
