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A 30 kW 240V generator is running at half load at 1800 rmin with an efficiency of 85 percent Find the total losses and input power 14 11 A self excited DC shunt generator is delivering

 A 30-kW, 240-V generator is running at half load at 1,800 r/min with an efficiency of 85 percent. Find the total losses and input power.

14.11      A self-excited DC shunt generator is delivering 20 A to a 100-V line when it is driven at 200 rad/s. The magnetization characteristic is shown in

Figure P14.11. It is known that Ra  = 1.and

Rf   = 100 Q. When the generator is  disconnected from the line, the drive motor speeds up to 220   rad/s.

What is the terminal  voltage?

 

 

Eb, V 180

120

 

60

 

 

0.5       1.0       1.5       2.0

If

Jun 18 2020 View more View Less

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