How was your AISSCE CBSE Class 12 Physics Exam 2013?
How was the CBSE Class 12 Physics Exam today?
Was it easy or difficult?
Many students reported that the questions were unexpected and extra ordinarily tough. What was your experience?
Were there questions beyond your comprehension?
Were there questions out of Syllabus?
Post your responses Now!
Anju R writes:
Hi,
The Physics CBSE exam was tough.It was not beyond the syllabus but it was confusing and was asked in a twisted manner.Almost all the students who prepared for the exams didnot leave any derivations,laws etc.But the saddest part was that they asked the big derivation for just one mark and only very few were asked.And most questions were unexpected ones.
It was painful when I saw that after the exam almost all the students were crying.Sitting for a whole night for studying the derivations,laws etc.. gave nothing to us other than tears.We were happy after the English exam but the Physics exam gave a terror over us about Board Exams.I think 90 % of the students could not complete saying that it was a lengthy paper.
During the exam I could see many sitting with great confusion while few others in a hurry to complete it and the rest of them sitting sadly.By the grace of God I completed 5 minutes before the alloted time and didn’t leave any question.I hope CBSE will consider us.
Yours sincerely,
Anju.R
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Categories: CBSE Physics Tags: Board examination, Central Board of Secondary Education, Education, Exam, Physic, Physics, question, Student, syllabus
Where is electricity stored after it is generated but before it is supplied? (Chat Transcript from FaceBook)
Where is electricity stored after it is generated but before it is supplied?
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Mahesh Sable Electrical power cannot be stored and,therefore,power plants must produce power as and when demanded.power stations r connected in parallel hence load is equally distributed,electric Power can be adjusted with help of step up or step down transformers.
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Mathew Abraham Transformer does not increase power
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Chitraja Rajan The demand for electricity varies randomly within a day itself…so there should be something which should be adjusted according to the demand.
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Vishnu Mohan G huge capacitors? i think i read somewhere like this.
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Hi All, the question is very smart, i think electricity stored before generation is stored in Water(DAM), Uranium Rods(Nuclear), HydroCarbons(Coal, GAS). Electricity can only store when it is in Direct Current format like in Batteries, Capacitor(its a very small time to store/release) Well there are many source where we can store electricity. When electricity is in demand then Power generation takes place within huge Alternators, this powers generation takes places in terms of Phase Shift between all the power Houses across the country, if this phase shift is disturb then power grid fails. after this the transformers come into picture so as to reduce Resistance loses.
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Kannan Kannan Ps in my little knowledge electricity unable to store continuing process of generater get current
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Chitraja Rajan at the generation side electricity is high ac current ..if it is converted into dc then there should be large containers to store them and also need suitable convertors to convert it in either form every time
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Mathew Abraham In modern generators, there are equipment to control the rate of flow of water and in turn rate of rotation as well as the power generated. SO, it is quite right to say that electricity is generated as and when required. When you switch on a device power generation also increases until it reaches maximum capacity. Thereafter we will get less power. Remember the low voltage we suffer during the evening when the power consumption is maximum a few seconds ago · Like
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