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A choke coil has....

A choke coil has.

A

high inductance and high resistance

B

high inductance and low resistance

C

low inductance and high resistance

D

low inductance and low resistance

Text Solution

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The correct Answer is:
B
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[" Which of the following "],[" statements are correct in "],[" the case of choke coil? "],[" A) Choke coil works on the "],[" principle of wattless current "],[" B) A choke coil has high "],[" inductance and low "],[" resistance "],[" C) A choke coil is preferred "],[" to a rheostat in ac circuit as "],[" it consumes almost zero "],[" power "],[" D) Choke coil is used to "],[" control both ac and de "]

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A choke coil is preferred to a rheostate in AC circuit as

A choke coil in a transformer of negligible resistance carries 5 mA current when it is operated at 220 V. The loss of power in the choke coil is –

A choke coil is preferred to a resistance for reducing current in an ac circuit because .

A lamp with a resistance of 8 Omega is connected to a choke coil as shown in fig. this arrangement is connected to an alternating source of 110V. The current in the circuit is 11A. The frequency of the ac is 60 Hz. Find (a) the impedence of the circuit and (b) the value of inductive of the choke coil.

CP SINGH-ALTERNATING CURRENT-EXERCISES
  1. In previous question the resistance of coil B is

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  2. In previous question the resistance of coil A is .

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  3. A choke coil has.

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  4. A choke coil is preferred to a resistance for reducing current in an a...

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  5. An electric lamp which runs at 80 volt d.c. and consumes 10 ampere is ...

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  6. In the circuit shown, R is a pure resistor, L is an inductor of neglig...

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  7. A capacitor and an inductor are connected in parallel across an ac sou...

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  8. In the given circuit the current drawn from the source is .

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  9. An inductor of 10mH an a capacitor of 16mF are connected in the circui...

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  10. The AC voltage across a resistance can be measured using

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  11. Alternating current can be measured by

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  12. Hot wire ammeters can be used for measuring

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  13. In the given circuit, the AC source has (omega) = 100 rad//s. Consider...

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  14. In a dc motor if E is the applied emf and e is the back emf then the e...

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  15. Armature current in dc motor will be maximum when

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  16. The armature of a dc motor has 20 Omega resistance It draws a currrent...

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  17. In a step - down transformer the input voltage is 22kV and the output ...

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  18. An ideal transformer is used to step up an alternating emf of 220V to ...

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  19. in a transformer the number of rurns in the primary and secondary coil...

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  20. in a step-up transformer, the turn ratio is 1:2 leclanche cell (e.m.f....

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