Phase angle error is due to _________(a) C.T.(b) magnetising component(c) iron loss(d) supply voltageI got this question by my school principal while I was bunking the class.Origin of the question is Errors in Current Transformers topic in section Extension of Instrument Ranges of Electrical Measurements

Phase angle error is due to _________(a) C.T.(b) magnetising component

1.	Phase angle error is due to _________(a) C.T.(b) magnetising component(c) iron loss(d) supply voltageI got this question by my school principal while I was bunking the class.Origin of the question is Errors in Current Transformers topic in section Extension of Instrument Ranges of Electrical Measurements
Answer» RIGHT CHOICE is (b) magnetising component The best I can EXPLAIN: We know that the phase angle error in a C.T. is given by the relation θ = \(\frac{180}{π} [\frac{I_m}{nI_s}]\) degrees where, θ is the phase angle error Im is the magnetising component of the excitation current Is is the secondary winding current It is observed from the EQUATION for the phase angle error that it DEPENDS on the magnetising component of the excitation current.

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