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Q Give the differences between AF choke and RF choke.
Audio - frequency (A.F) chokes
Radio frequency (R. F) chokes: or high frequency (H.F) chokes
a) Used in low frequency a.c. circuit.
a) used in high frequency a.c. circuit
b) An iron core is used.
b) Air chokes are used.
c) The inductance may be high
c) The inductance may be low
d) Used in fluorescent tubes.
d) Used in wireless receiver circuits
Why rotation of rigid bodies through finite angles not a vector? Ans) Because it does not obey one of the laws of vector algebra(law of commutativity).
Describe Fresnel''s theory of optical rotation
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Gauss' law for magnetic fields The magnetic flux by a closed surface is zero; no magnetic charges present. In differential form, div B = 0.
various techniques involved in crystal growth
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as flux = E.A and flux density is equal to flux/A then why A/A cannot e cancelled ?
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Laue pattern (M. von Laue): The pattern generated on a photographic film while high-frequency electromagnetic waves (such as x-rays) are fired at a crystalline solid.
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