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Seled true statement for purely inductiv...

Seled true statement for purely inductive circuit

A

current and voltage are in phase

B

current lags behind the e.m.f. by phase of `pi/2rad`

C

e.m.f. lags behind the current by phase of`pi/2rad`

D

current lags behind the e.m.f. by phase of `pirad`

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  6. In series LCR circuit, at resonance impedance

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  8. The impedance of LCR circuit increases with frequency when

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  9. Which of the following depends upon frequency?

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

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

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

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

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

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

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

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

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

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

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

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