A class-A thyristor d.c. chopper shown in Fig.4.37 is operating at a frequency of 2 kHz from 96 V d.c. source to supply a resistive load of 8 2. The load time constant is 6 ms. If the mean load voltage is 57.6 V, find duty cycle (mark to space ratio), the mean load current, and the magnitude of the current ripple. Derive any formula used. is Fig.4.37 Va T DFW L R

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A: To solve this question We draw a equivalent circuit diagram of the given power system .

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A: Given: V1V2=240120, f=60 Hz and transformer is rated at 5 kVA.

Q: Please solve thiss questionnnnn

A: Solution:

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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.