# In designing air preheater, the important design consideration is that _____ ? with Answer - Mechanical Engineering Mcqs | TestPrep

> Solved MCQ: In designing air preheater, the important design consideration is that _____ ? Correct Answer: D. stack gases should not be cooled to the dew point. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

---

Tested in Competitive Exams:

- [NTS Test Prep](https://test-prep.blog/exams/nts)
- [FPSC Past Papers](https://test-prep.blog/exams/fpsc)
- [PPSC Solved MCQs](https://test-prep.blog/exams/ppsc)
- [PMDC MDCAT 2026](https://test-prep.blog/exams/mdcat)
- [UET ECAT Prep](https://test-prep.blog/exams/ecat)
- [CSS Central Superior](https://test-prep.blog/exams/css)

- [Mechanical Engineering Mcqs](https://test-prep.blog/categories/mechanical-engineering-mcqs)
Difficulty: Easy 77% Accuracy

# In designing air preheater, the important design consideration is that _____ ?

Direct Answer & Quick Reference

The correct option is **D. stack gases should not be cooled to the dew point**.

A. approach temperature should be as low as possible

B. handling and maintenance should be easier

C. heat transfer area should be optimum

D. stack gases should not be cooled to the dew point **(Correct Answer)**

E. none of the above

✨ Explain with AI

Verified Key: D. stack gases should not be cooled to the dew point
Solved by 3,737+ students

Verified against official examination board answer keys and standard curriculum textbooks.

- [Previous Question The patrol is distilled at a temperature from :](https://test-prep.blog/mcq/the-patrol-is-distilled-at-a-temperature-from-1b1ae628-c41f-4e8c-b36b-585b4f64fa91)
- [Next Question Which of the following are used in diesel engines and oil fired boilers :](https://test-prep.blog/mcq/which-of-the-following-are-used-in-diesel-engines-and-oil-fired-boilers-bc69d84b-a5e7-4469-9ce9-c6b6ca5ebf28)

- [Practice More Mechanical Engineering Mcqs MCQs](https://test-prep.blog/quiz/smart?category=mechanical-engineering-mcqs)
- [How We Verify Questions →](https://test-prep.blog/editorial-policy)

## Subject Overview

Explore thousands of solved past paper MCQs for Mechanical Engineering Mcqs categorized with explanations.

- [Browse All Mechanical Engineering Mcqs MCQs →](https://test-prep.blog/categories/mechanical-engineering-mcqs)

## Related Questions

- [The patrol is distilled at a temperature from :](https://test-prep.blog/mcq/the-patrol-is-distilled-at-a-temperature-from-1b1ae628-c41f-4e8c-b36b-585b4f64fa91)
- [Which of the following are used in diesel engines and oil fired boilers :](https://test-prep.blog/mcq/which-of-the-following-are-used-in-diesel-engines-and-oil-fired-boilers-bc69d84b-a5e7-4469-9ce9-c6b6ca5ebf28)
- [The hydraulic turbines are also known as : _____ ?](https://test-prep.blog/mcq/the-hydraulic-turbines-are-also-known-as-c4281981-41df-4884-900c-0e42a3130767)
- [Which of the following is mostly used used as blast furnace fuel for extracting pig iron from iron ores?](https://test-prep.blog/mcq/which-of-the-following-is-mostly-used-used-as-blast-furnace-fuel-for-extracting--d17a6b4a-fb6a-4d81-9aa0-7d0704d3d22f)
- [Which of the following solid fuel has high carbon content?](https://test-prep.blog/mcq/which-of-the-following-solid-fuel-has-high-carbon-content-23ab9cf2-4a63-4460-9aa4-9651149f7b7e)

---
*Source: https://test-prep.blog/mcq/in-designing-air-preheater-the-important-design-consideration-is-that___________-8434c4f2-32ac-4743-a7bc-9fd046eda329*
*Format: Markdown for Agents (Content Negotiation: text/markdown)*