Alternating Current

JEE Main level, single correct, medium

176 of 190

Question 176 of 190

Match the List-I with List-II. List I List II A AC generator I Presence of both L and C B Transformer II Electromagnetic Induction C Resonance phenomenon to occur III Quality factor D Sharpness of resonance IV Mutual Inductance Choose the correct answer from the options given below:

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Answer: (C) A-II, B-IV, C-I, D-III

(A) An AC generator works on the electromagnetic induction principle. So, (A)→II\left(A\right)\rightarrow II
(B) The transformer works on the principle of mutual induction. So, (B)→IV\left(B\right)\rightarrow IV
(C) Resonance occurs when the value of inductive and capacitive reactance have equal magnitude but a phase difference of 180∘180^{\circ}. So, (C)→I\left(C\right)\rightarrow I
(D) The sharpness of resonance is defined using the quality factor which explains how fast energy decay in an oscillating system. (D)→III\left(D\right)\rightarrow III

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