Technical Education ARKujur

Network theorem are the best point about network analysis ✍️Maxwell's Mesh current method:- In this method Kirchhoff's voltage is applied to a network to write mesh equation in terms of mesh current. ✍️Nodal analysis:- Nodal analysis essential aims at choosing a reference node in the network and then finding the unknown voltage at the independent nodes w.r.t. reference node. ✍️Superposition theorem:- This theorem is called superposition becouse we superpose or algebraically add the components (current or voltage)due to each independent source acting alone to obtain the total current in or voltage across a circuit elements. ✍️Thevenin's theorem:- Any linear bilateral network having terminals A and B can be replaced by a single source of e.m.f.Vth in series with a single resistance Rth. १)The emf Vth is the voltage obtained across terminals A and B with load,if any removed i.e.it is open-circuited voltage between terminals A and B. २)The resistance Rth is the resistance of th...

Air 🌫️ Blast 💥 Circuit 🧬Breaker ⚓are the desirable features to be found. The drawback of the oil circuit breakers are the fire risk due the inflammable oil,the deterioration of the oil, necessary periodic replacement and the difficulty of reaching the contacts for maintenance purpose.                 This led to the development of circuit breakers using compressed air or gas as the interrupting medium. The desirable features to be found in Air blast circuit breakers:- ✍️ High speed operation:-   The air Blast Circuit Breaker does and arc duration throughout the current range are of the order of one half to one cycle ✍️ Suitability for frequent operation:-  Repeated switching by an air blast circuit breakers is possible simply because of absence of air. ✍️ Facility of high speed reclosure:-  This by automatic means is an advantage on HV interconnected network to assist and maintain system stability during the clearance of transien...