Example (2) 720 W and the shunt field coil resistance is 55 2. If it has a F.L. efficiency of 88%, find the armature resistance. Also, find the load current corresponding to maximum efficiency. A shunt generator has a F.L. current of 196 A at 220 V. The stray losses are

Example (2) 720 W and the shunt field coil resistance is 55 2. If it has a F.L. efficiency of 88%, find the armature resistance. Also, find the load current corresponding to maximum efficiency. A shunt generator has a F.L. current of 196 A at 220 V. The stray losses are

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.48P

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Concept explainers

Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.

Question

Example (2)
720 W and the shunt field coil resistance is 55 2. If it has a F.L. efficiency of 88%, find the armature
resistance. Also, find the load current corresponding to maximum efficiency.
A shunt generator has a F.L. current of 196 A at 220 V. The stray losses are
(Electrical Technology Punjab Univ. Nov. 1988)
220 100
Solution,
Qutnut

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