SSC JE Electrical Engineering 23 Jan 2018 Morning Paper

Question : 118 of 200

Marks: +1, -0

At the maximum power transfer condition, the power transferred to the load is 70 W. What is the total power (in W) generated by the voltage source?

Solution:

At maximum power transfer

η=50%

Now,

P_0/P_\in=50/100=1/2

Now output power

P_0 = 70 W

P_\in = ?

∴70/{\P_\in}=1/2

∴ P_in =70×2=140w

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