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The peak value of 220 a.c. is...

The peak value of 220 a.c. is

A

220 V

B

`(220)/(sqrt2) V`

C

440 V

D

`220 sqrt2 V`

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The correct Answer is:
D
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PRADEEP-ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT-Exercise
  1. Choose the quantity whose SI is not ohm.

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  2. Which of the following does not have the dimensions of time ?

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  3. The peak value of 220 a.c. is

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  4. Phase difference between voltages across L and C in series is

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  5. The resistance of a coil for direct current is 10 ohm. When a.c. is se...

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  6. The average value of a.c. voltge E =E(0) sin omega t over the time int...

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  7. The alternating current from a source is represented by I = 0.5 sin 31...

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  8. Q factor of resonance is given by

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  9. The power factor of an a.c. circuit is givne by cos phi =

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  10. The…………… of alternating current varies …………………….. With time and its………...

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  11. Ordinary d.c. ammerter and d.c. votmeter, when used in ………………….record…...

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  12. The r.m.s. value or………………………value or ………………….value of a.c. is ……………………...

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  13. 220 V a.c. means…………………… and an a.c. of 1 A means…………………….

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  14. In an a.c. circuit containing R only…………………and…………………are in ………………..ph...

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  15. In an a.c. circuit containing L only, alternating current………………….alter...

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  16. The dimensions of inductvie………………………and ……………….are the same as those o...

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  17. A consdenser ………………….a.c. to pass through but…………………….d.c.

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  18. Ohmic resistance R can reduce ………………..but indcutor L can reduce………………....

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  19. A series resonance circuit is called an ……………..and a……………………is called ...

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  20. A capacitor is 5 mu F is conneted to 20 V supply through a resistance ...

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