General Studies · Steam Boilers
निम्नलिखित में से कौन-सा एक वाटर-ट्यूब बॉयलर (water-tube boiler) है?
- 1कोचरन बॉयलर (Cochran boiler)
- 2लंकाशायर बॉयलर (Lancashire boiler)
- 3कॉर्निश बॉयलर (Cornish boiler)
- 4बैबकॉक और विलकॉक्स बॉयलर (Babcock and Wilcox boiler)✓
सही उत्तर देखें
बैबकॉक और विलकॉक्स बॉयलर (Babcock and Wilcox boiler)
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