Page 172 - Electrician - TT (Volume 1)

ELECTRICIAN - CITS

Comparison between series parallel circuits

RLC Series RLC Parallel
• Current is taken as reference • Voltage is taken as reference
• Supply voltage is the vector sum of branch • Total current is the vector sum of branch current
voltage
• KVL is applicable to series cir-cuits. • KCL is applicable to parallel cir-cuits
• At resonance Z=R , circuit imped-ance is • At resonance Z=R , circuit im-pedance is
minimum and current is maximum maximum and cur-rent is minimum
• RLC series circuit is known as ACCEPTER circuit. • RLC parallel circuit is known as REJECTOR circuit

Importance of RLC circuit in Electrical Engineering
• We know that all the conducting parts have its own resistance .In addition to that inductance and capacitance
are the two distributed parameters which must be considered while designing large capacity electrical
machines , transmission lines and cables
• Active power depends on power factor which depends on RLC parameters.
• In electronics RLC circuits have wide range of use.

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CITS : Power - Electrician & Wireman - Lesson 26-29 CITS : Power - Electrician & Wireman - Lesson 26-29