# In a boiler installation the natural draught is produced _____ ? with Answer - Electrical Engineering Mcqs | TestPrep

> Solved MCQ: In a boiler installation the natural draught is produced _____ ? Correct Answer: B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# In a boiler installation the natural draught is produced _____ ?

Direct Answer & Quick Reference

The correct option is **B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column**.

A. due to the fact that furnace gases being light go through the chimney giving place to cold air from outside to rush in

B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column **(Correct Answer)**

C. due to the fact that at the chimney top the pressure is more than its environmental pressure

D. all of the above

✨ Explain with AI

Verified Key: B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column
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