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A sinusoidal voltage of peak value of 283 V and frequency 50 Hz is applied to a series LCR circuit in which R = 3 Omega , L = 25.48 mH and C = 796 mu F. Find the phasedifference between the voltage across the source the current. |
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Answer» Solution :PHASE difference `( phi )` between VOLTAGE and current can be FOUND as follows . `tan phi = ( X_(L) - X_(C ))/( R )` `:. tan phi = ( 8-4)/( 3) = ( 4)/(3) `....(1) But from table of natural tangents, `tan ( 53^(@) 8.) = 1.3335 = 1.3333` `:. phi = 53^(@) 8.` Voltage leads aheadof current by an angle `53^(@) 8.` |
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