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Eddy current are produce when...

Eddy current are produce when

A

A metal is kept in varying magnetic field

B

A metal is kept in the steady magnetic field

C

A circular coil is placed in a magntic field

D

Through a circular coil, current is passes

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The correct Answer is:
A
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VMC MODULES ENGLISH-ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT -ENABLE
  1. Which of the following does not use the application of eddy current?

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  2. The core of a transformer is laminated to reduce

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  3. Eddy current are produce when

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  4. If the angular speed of the armature of a dynamo is doubled then the a...

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  5. Choke coil works on the principle of

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  6. When speed of a DC generator decreases, the armature current

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  7. Which of the following statement is incorrect :

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  8. An alternating voltage E = 200sqrt 2sin(100t) is connected to a muF ca...

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  9. An AC circuit consists of an inductor of inductance 0.5H and a capacit...

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  10. The average power dissipated in a pure capacitance AC circuit is

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  11. In a region of unform magnetic induction B=10^(-2) T, a circulr coil ...

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  12. An inductive circuit a resistance of 10ohm and an inductance of 2.0 h...

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  13. In a LCR circuit having L=8.0 henry, C=0.5 mu F and R=100 ohm in serie...

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  14. In a series resonant L-C-R circuit, the capacitance is changed from C ...

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  15. A 120 volt AC source is connected across a pure inductor of inductance...

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  16. A generator produces a time varying voltage given by V=240 sin 120 t, ...

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  17. A sinusoidal ac current flows through a resistor of resistance R . If ...

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  18. A 40Omega electric heater is connected to a 200 V , 50 Hz mains supply...

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  19. The rms value of an AC of 50Hz is 10 A. the time taken by an alternati...

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  20. The root mean square value of the alternating current is equal to

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