SSC JE Electrical Engineering 24 Jan 2018 Evening Paper

Question : 148 of 200

Marks: +1, -0

What is the percentage voltage error of a potential transformer with system voltage of 11,000 V and having turns ratio of 100, if the measured secondary side voltage is 105 V?

2.75
3.55
4.54
9.09

Validate

Solution:

Percentage of error =

{\system \voltage- \Measure \voltage}/{\system \voltage}

Measure voltage = Turn × Secondary voltage
= 100 × 105
= 10500 V
% of error =

({11000 -10500}/11000)×100

= 4.54%

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