Solved papers for JEE Main & Advanced JEE Main Paper (Held On 25 April 2013)

done JEE Main Paper (Held On 25 April 2013) Total Questions - 2

• question_answer1)                 When resonance is produced in series LCR circuit, then which of the following is not correct?   JEE Main Online Paper ( Held On 25  April 2013 )
  A)
                  Current in the circuit  is in phase with the applied voltage.
  done clear
  B)
                                         Inductive and  capacitive reactance?s are equal.
  done clear
  C)
                                         If R reduced, the voltage across capacitor will increase.
  done clear
  D)
                                         Impedance of circuit is maximum.
  done clear
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• question_answer2)                 A series LR circuit is connected to an ac source of frequency is equal to \[2R.\] A capacitance of capacitive reactance equal to R is added in series with L and R The ratio of the new power factor to the old one is :     JEE Main Online Paper ( Held On 25  April 2013 )
  A)
                  \[\sqrt{\frac{2}{3}}\]                                     
  done clear
  B)
                                         \[\sqrt{\frac{2}{5}}\]
  done clear
  C)
                                         \[\sqrt{\frac{3}{2}}\]     
  done clear
  D)
                                         \[\sqrt{\frac{5}{2}}\]
  done clear
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