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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2002

  • question_answer
    The number of turns of primary and secondary coils of transformer are 500 and 5000 respectively. The voltage and frequency of primary coil are 800 V and 50 Hz respectively, then the frequency and voltage of secondary coil will be

    A)  50 Hz, 8000 V    

    B)  800 Hz, 800 V

    C)  50 Hz, 80 V      

    D)  50 Hz, 800 V

    Correct Answer: A

    Solution :

     \[\frac{{{V}_{S}}}{{{V}_{P}}}=\frac{{{N}_{S}}}{{{N}_{P}}}\] \[\Rightarrow \] \[{{V}_{S}}=\frac{{{N}_{S}}}{{{N}_{p}}}\times {{V}_{p}}\] \[=\frac{500}{500}\times 800\] \[=8000V\] No change in the frequency of transformer.


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