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Which is used in speedometer of a motor ...

Which is used in speedometer of a motor car?

A

displacement current

B

conduction

C

Eddy current

D

none of these

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UNITED BOOK HOUSE-MODEL PAPER SET-03-EXERCISE
  1. The velocity of a charged particle moving in a magnetic field perpendi...

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  2. Which is not the unit of magnetic permeability?

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  3. Which is used in speedometer of a motor car?

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  4. The self induction of an inductor L = 2mH, and the current through it ...

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  5. The wave function (in S.I. unit) for a light wave is Psi (x, t) = 10^3...

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  6. A convex lens of focal lengths 30 cm produces 5 times magnified real ...

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  7. If the focal length of the eye piece of a telescope is doubled, its ma...

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  8. The de Broglie wave length of an electron of velocity 1.5×10^8 m/s is ...

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  9. Write the variation of magnetic moment of an electron revolving in Boh...

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  10. Which of the following is not a semiconductor?

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  11. The length of a dipole antenna for the carrier wave of frequency 3 xx ...

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  12. What is meant by the angle of dip 31^@N of Kolkata ?

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  13. State Lenz’s law.

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  14. An alternating current having peak value 141 A is used to heat,a metal...

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  15. What is dispersive power?

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  16. A house hold circuit has a fuse of 5 A rating. Calculate the maximum n...

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  17. Write the Wheatstone bridge principle.

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  18. Mention two differences Between magnetic lines of force and electric l...

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  19. A charged particle is found to move in a straight line through some r...

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  20. Mention two characteristics of electromagnetic waves.

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