Practice JEE - Chemical Bonding & Molecular Structure - Resonance, Notes, Questions & Downloads

Resonance

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Q1. In a series RLC circuit for lower frequency and for higher frequency, power factors are respectively ______________

(a) Leading, Lagging

(b) Lagging, Leading

(d) Same in both cases

Q2. In a series RLC circuit R = 10 k?, L = 0.5 H and C = 1250 ?F. Calculate the frequency when the circuit is in a state of resonance.

(a) 4.089 ? 104 Hz

(b) 11111.1?Hz

(d) 1? ? 104 Hz

Q3. A series RLC circuit has a resonance frequency of 1 kHz and a quality factor Q = 50. If R and L are doubled and C is kept same, the new Q of the circuit is?

(a) 25.52

(b) 35.35

(d) 20.02

Q4. A circuit with a resistor, inductor and capacitor in series is resonant with frequency f Hz. If all the component values are now doubled, then the new resonant frequency will be?

(a) 2 f

(b) f

(d) f2

Q5. A 440 V, 50 HZ AC source supplies a series LCR circuit with a capacitor and a coil. If the coil has 100 m? resistance and 15 mH inductance, then at a resonance frequency of 50 Hz, the Q factor of the circuit is?

(a) 82.63

(b) 47.115

(d) 92.38

Q6. A 440 V, 50 HZ AC source supplies a series LCR circuit with a capacitor and a coil. If the coil has 100 m? resistance and 15 mH inductance, then at a resonance frequency of 50 Hz, what is the value of the capacitor?

(a) 676 ?F

(b) 575 ?F

(d) 610 ?F

Q7. At what frequency will the current lead the voltage by 30? in a series circuit with R = 10? and C = 25 ?F?

(a) 11.4 kHz

(b) 4.5 kHz

(d) 24.74 kHz

Q8. A 440 V, 50 HZ AC source supplies a series LCR circuit with a capacitor and a coil. If the coil has 100 m? resistance and 15 mH inductance, then at a resonance frequency of 50 Hz, the half power frequencies of the circuit are?

(a) 50.53 Hz, 49.57 Hz

(b) 52.12 HZ, 49.8 Hz

(d) 50 HZ, 49 Hz

Q9. A series RLC circuit has R = 50 ?, L = 0.01 H and C = 0.04 ? 10-6 F. System voltage is 100 V. At this frequency, the circuit impedance is?

(a) 50 ? j2.5 ?

(b) 50 ? j2.8 ?

(d) 50 + j2.8 ?

Q10. A series RLC circuit has R = 50 ?, L = 0.01 H and C = 0.04 ? 10-6 F. System voltage is 100 V. The frequency, at which the maximum voltage appears across the capacitor, is?

(a) 5937.81 Hz

(b) 7370 Hz

(d) 981 Hz

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The Molecular Formula Of Chloride Of A Metal M Is MCL3. The Formula Of Its Carbonate Would Be

Modified 244 Year Ago

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244 Year Ago

The Molecular Formula Of Chloride Of A Metal M Is MCL3. The Formula Of Its Carbonate Would Be

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0 Answer

492 views

Chemical Formula For Calcium Pyrophosphate Is Ca2P2O7. The Formula For Ferric Pyrophosphate Will Be

Modified 244 Year Ago

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244 Year Ago

Chemical Formula For Calcium Pyrophosphate Is Ca2P2O7. The Formula For Ferric Pyrophosphate Will Be

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0 Answer

439 views

RbO2 Is

Modified 15 Year Ago

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15 Year Ago

RbO2 Is

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0 Answer

431 views

Formula Of A Metallic Oxide Is MO. The Formula Of Its Phosphate Will Be

Modified 244 Year Ago

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244 Year Ago

Formula Of A Metallic Oxide Is MO. The Formula Of Its Phosphate Will Be

0 votes

0 Answer

393 views

Magnesium Reacts With An Element (X) To Form An Ionic Compound. If The Ground State Electronic Configuration Of (X) Is 1s2 2s2 2p3, The Simplest Formula For This Compound Is

Modified 244 Year Ago

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244 Year Ago

Magnesium Reacts With An Element (X) To Form An Ionic Compound. If The Ground State Electronic Configuration Of (X) Is 1s2 2s2 2p3, The Simplest Formula For This Compound Is

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380 views

The Calculated Bond Order In O2 -ion Is

Modified 15 Year Ago Rachit

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Rachit

15 Year Ago

The Calculated Bond Order In O2 -ion Is

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0 Answer

372 views

Which Of The Following Is Paramagnetic With Bond Order 0.5?

Modified 15 Year Ago

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15 Year Ago

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