SATHEE: Electro Magnetic Induction And Alternating Currents Question 221

Electro Magnetic Induction And Alternating Currents Question 221

Question: A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillations of frequency f. If L is doubled and C is changed to 4C, the frequency will be

Options:

A) $8 f$

B) $f / 2 \sqrt{2}$

C) $f / 2$

D) $f / 4$

Show Answer

Answer:

Correct Answer: B

Solution:

We know that frequency of electrical oscillation in L.C. circuit is

$f = \frac{1}{2 π} \sqrt{\frac{1}{L C}}$

Now, L=2L & C=4C $f^{'} = \frac{1}{2 π} \sqrt{\frac{1}{2 L \cdot 4 C}} = \frac{1}{2 π} \sqrt{\frac{1}{L C}} \times \frac{1}{2 \sqrt{2}} \Rightarrow, f^{'}$

$= \frac{1}{2 \sqrt{2}} \times f$

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Electro Magnetic Induction And Alternating Currents Question 221

Question: A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillations of frequency f. If L is doubled and C is changed to 4C, the frequency will be

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Electro Magnetic Induction And Alternating Currents Question 221

Question: A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillations of frequency f. If L is doubled and C is changed to 4C, the frequency will be

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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