GATE EE 2019 Set 1 — Question 50
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Power Systems → Fault Analysis → Symmetrical Faults
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Question
The probability of a resistor being defective is 0.02. There are 50 such resistors in a circuit. The probability of two or more defective resistors in the circuit (round off to two decimal places) is ______.
Correct answer
0.25 to 0.27
Solution
The number of defective resistors follows a binomial distribution with and .Probability of no defective resistor:Probability of exactly one defective resistor:Probability of two or more defective resistors:Rounded off to two decimal places, the probability is .Answer:
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