रेल की पटरी जोड़ते समय उनक� – InterviewSolution

1.	रेल की पटरी जोड़ते समय उनके बीच थोड़ी जगह क्यों छोड़ते हैं।
Answer» रेल की पटरियों को जोड़ते समय उनके बीच कुछ जगह छोड़ी जाती है ताकि गर्म होकर फैलने पर पटरी टेढ़ी न हो जाए।

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