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Form factor of an alternating voltage is...

Form factor of an alternating voltage is the ratio of

A

peak value and rms value

B

peak value and average value

C

rms value and average value

D

rms value and peak value

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The correct Answer is:
C
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A series combination of an inductor of self-inductance L, capacitor of capacitance C and resistor R is connected to an alternating voltage source of V=V_0sinomegat . The current through the circuit is I=I_0sin(omegat-theta) ,where I_0=V_0/(sqrt(R^2+(omega-1/(omegaC))^2)) and theta=tan^-1 ""1/R(omegaL-1/(omegaC)) . Now that, the frequency of both voltage and current is f=omega/(2pi) . The rms value of these parameters during one complete cycles are V_(rms)=V_0/sqrt2 and I_(rms)=I_0/sqrt2 respectively. These values are shown in alternating voltmeter and ammeter. The power consumed by the circuit P=VI. The mean value i.e., the effective power of the circuit in a complete cycle is overlineP=V_(rms)I_(rms)costheta . This costheta is termed the power factor. The power factor of the circuit in question (iii) is

A series combination of an inductor of self-inductance L, capacitor of capacitance C and resistor R is connected to an alternating voltage source of V=V_0sinomegat . The current through the circuit is I=I_0sin(omegat-theta) ,where I_0=V_0/(sqrt(R^2+(omega-1/(omegaC))^2)) and theta=tan^-1 ""1/R(omegaL-1/(omegaC)) . Now that, the frequency of both voltage and current is f=omega/(2pi) . The rms value of these parameters during one complete cycles are V_(rms)=V_0/sqrt2 and I_(rms)=I_0/sqrt2 respectively. These values are shown in alternating voltmeter and ammeter. The power consumed by the circuit P=VI. The mean value i.e., the effective power of the circuit in a complete cycle is overlineP=V_(rms)I_(rms)costheta . This costheta is termed the power factor. The frequency of the applied alternating voltage in an ac circuit is 50 Hz.Resistance and self inductance are 37.6Omega and 120 mH . The phase difference between the voltage and current is

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CHHAYA PUBLICATION-ALTERNATING CURRENT -EXERCISE (Multiple Choice Question)
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  5. The rms value of potential difference V shown in the Fig.2.42 is

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  6. The rms value and frequency of an ac current are 5A and 50 Hz respecti...

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  7. In an ac circuit containing capacitance , only the current

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  8. In an LR circuit , the phase angle between alternating voltage and alt...

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  9. In an LCR series circuit, the capacitance is reduced to one-fourth, wh...

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  10. The phase difference between V and I of an LCR circuit in series reson...

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  11. The reactance of an inductor of inductance 1/piH at frequency 50 Hz is

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  12. Which quantity in an ac circuit is not dependent on frequency?

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  13. The condition of getting maximum current in an LCR series circuit is

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  14. The series resonant frequency of an LCR circuit is f. IF the capacitan...

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  15. A coil has resistance 30 Omega and inductive reactance 20 Omega at 50 ...

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  16. A fully charged capacitor C with initial charge q0 is connected to a ...

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  17. A voltage V0sinomegat is applied across a series combination of resist...

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  18. When an ideal choke is connected to an ac source of 100V and 50Hz, a c...

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  19. In an LCR circuit voltages across R,L and C are 10V,10V and 20V respec...

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  20. In an ac circuit alternating voltage E=200sqrt2 sin 100t volt is conne...

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