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Power Engineering 3B1 Chapter 7 Questions with Complete Solutions (Latest 2025)

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Power Engineering 3B1 Chapter 7 Questions with Complete Solutions (Latest 2025)

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Power Engineering 3B1 Chapter 7
Questions with Complete Solutions
(Latest 2025)
When furnace draft is maintained at atmospheric pressure (or
just below), the draft is referred to as:
a. Natural draft
b. Forced draft
c. Induced draft
d. Balanced draft
e. negative draft - Correct Answers ✅d


Natural draft is the difference in pressure caused by:
a. The height of the furnace
b. The temperature in the furnace
c. The diameter of the stack
d. The atmospheric air conditions
e. the height of the stack - Correct Answers ✅e


Advantages of mechanical draft are:.
Better purging of boiler
Less expensive stack can be used
Less supervision during operation
Increases unit efficiency
1,2
1,2,3

, Power Engineering 3B1 Chapter 7
Questions with Complete Solutions
(Latest 2025)
1,2,4
2,3,4
1,4 - Correct Answers ✅c


Disadvantages of mechanical draft are:
Higher initial cost
Closer supervision is required
More expensive stack must be used
Draft is dependent on atmospheric condition


1,4
1,3
2,3
3,4
1,2 - Correct Answers ✅e


Draft is a term that indicates:
a. Atmospheric pressure
b. Static pressure
c. Absolute pressure
d. Friction pressure
e. gauge pressure - Correct Answers ✅b

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