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Examveda

In a D.C. generator the critical resistance can be increased by

A. Increasing its field resistance

B. Decreasing its field resistance

C. Increasing its speed

D. Decreasing its speed

Answer: Option C

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Comments ( 2 )

  1. Abdallah Hussein
    Abdallah Hussein :
    4 months ago

    if Rfc is increaced more than Rfc critical in speed "x" the voltage will not building up
    so we must inceasing the speed to tangent the the new speed curve

  2. MOUZAM ALI
    MOUZAM ALI :
    6 months ago

    any one can explain?

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