question_answer 30)

  Which of the following combinations should be selected for better tuning of an LCR circuit used for communication? (a)                 (b)                 (c)                 (d)

Answer:

  (c)The LCR circuit used for communication should possess high quality factor (Q factor) of resonance, which is given by  To make high ; R should be low ; L should be high and C should be low. Therefore, Choice (c) is the best suited.