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In LCR series drcuit, at resonance the a...

In LCR series drcuit, at resonance the applied e.m.f. and current

A

out of phase

B

differ by `pi` radians

C

in phase

D

differ by`pi/2rad`

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CHETANA PUBLICATION-AC CIRCUITS-Exercise
  1. Seled true statement for purely inductive circuit

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  2. Resonance frequency for parallel LC circuit is given by

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  3. In LCR series drcuit, at resonance the applied e.m.f. and current

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  4. In series LCR circuit, at resonance impedance

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  5. In series LCR circuit R = 4Omega, L = 0.2 H and C = 0.1 F, at resonanc...

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  6. The impedance of LCR circuit increases with frequency when

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  7. Which of the following depends upon frequency?

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  8. In an R.C. circuit resistance = 4 Omega and XC = 3 Omega, then power f...

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  9. In a circuit L,Cand R are connected in series with an alternating volt...

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  10. In an AC circuit, e and i are given by e = 150 sin 150 t V and i = 150...

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  11. In a series LCR circuit the phase difference between the v oltage and ...

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  12. Select and write the most appropriate answer. The instantaneous curren...

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  13. An L- C - R series circuit is joined to a source of alternating e.m.f....

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  14. In an A.C. circuit I =10 cos (100t) ampere and V = 20 sin (100t). The ...

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  15. An alternating e.m.f. is applied to a series L - C - R circuit. It the...

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  16. Answer the following in short. What isthe power factor for a purely re...

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  17. State the condition for series resonance. Obtain an expression for res...

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  18. What is the phase difference between current and e.m.f. in a purely ca...

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  19. A alternating e.m.f. e = 200 sin (100 pit) is connected across a resis...

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  20. Define: inductive reactance capacitive.

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