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Alternating current is transmitted to di...

Alternating current is transmitted to distant places at

A

high voltage and low current

B

high voltage and high current

C

low voltage and low current

D

low voltage and high current

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Alternating current is transmitted to distance places at

(no, loss, loss, direct current, 50 Hz, 0 Hz, alternating current, 220 Hz, infinite) The electric current in which direction of current in constant is called as ______ whereas electric current in which direction of current reverses after equal intervals of time is called __________. When direct curret is transmitted over long distances, there is ________ of energy whereas there is _________ of energy for transmitting alternating current. The frequencies of direct current and alternating current (in India) are _______ and ________ respectively.

Alternating current can be produced by

Alternating currents can be produced by a

NARAYNA-ALTERNATING CURRENT-C.U.Q
  1. In an ac circuit the current

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  2. The average emf during the positive half cycle of an ac supply of peak...

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  3. Alternating current is transmitted to distant places at

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  4. In case of a.c circuit, Ohm's law holds good for {:a) Peak values of...

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  5. In case of AC circuits the relation V = iZ, where Z is impedance, can ...

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  6. Alternating current can not be measured by D.C. Ammeter because

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  7. The r.m.s value of Potential due to superposition of given two alterna...

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  8. If the instantaneous current in a circuit is given by i=2cos (omegat-p...

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  9. If a capacitor is connected to two different A.C generators, then the ...

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  10. In general in an alternating current circuit

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  11. The magnitude inducted e.m.f. in an LR circuit at brea of circuit as c...

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  12. The emf and current in a circuit are such that E = E(0) sin omega t an...

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  13. The correct variation of resistance R with frequency f is given by

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  14. Same current is flowing in two alternating circuits. The first circuit...

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  15. When an a.c source is connected across a resistor

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  16. The phase angle between current and voltage in a purely inductive circ...

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  17. Ratio of impedence to capactive reactance has

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  18. An inductor-coil having some resistance is connected to an AC source. ...

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  19. Why the current does not rise immediately in a circuit containing indu...

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  20. In an AC circuit containing only capacitance the current

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