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A DC power supply has no-load voltage of 30 V, and a full-load voltage of 25 V at a full-load current of 1 A. Its output resistance and load regulation, respectively, are
  • a)
    5 Ω and 20%    
  • b)
    25 Ω and 20%
  • c)
    5 Ω and 16.7%
  • d)
    25 Ω and 16.7%
Correct answer is option 'B'. Can you explain this answer?
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A DC power supply has no-load voltage of 30 V, and a full-load voltage...


Output resistance = 
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A DC power supply has no-load voltage of 30 V, and a full-load voltage...
The output resistance of the DC power supply can be calculated using the formula:

Output resistance = (No-load voltage - Full-load voltage) / Full-load current

Output resistance = (30 V - 25 V) / 1 A

Output resistance = 5 Ω

The load regulation of the DC power supply can be calculated using the formula:

Load regulation = ((No-load voltage - Full-load voltage) / No-load voltage) x 100%

Load regulation = ((30 V - 25 V) / 30 V) x 100%

Load regulation = 16.67%

Therefore, the output resistance of the DC power supply is 5 Ω and the load regulation is 16.67%.
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A DC power supply has no-load voltage of 30 V, and a full-load voltage of 25 V at a full-load current of 1 A. Its output resistance and load regulation, respectively, area)5 Ω and 20% b)25 Ω and 20%c)5 Ω and 16.7%d)25 Ω and 16.7%Correct answer is option 'B'. Can you explain this answer?
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