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This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.
1. |
In a furnace employing forced draught compared to induced draught __________ |
A. | the fan operates hot and hence blades are liable to corrosion and erosion |
B. | positive pressure exists in the furnace |
C. | air is sucked in, so air leaks are more and hence furnace efficiency is reduced |
D. | none of the mentioned |
Answer» D. none of the mentioned | |
2. |
Natural draught produced by a chimney depends upon __________ |
A. | density of chimney gases |
B. | height of chimney |
C. | both density of chimney gases and height of chimney |
D. | none of the mentioned |
Answer» D. none of the mentioned | |
3. |
Stack heat losses can be minimised by __________ |
A. | using low c.v. fuels |
B. | controlling the excess air |
C. | oxygen enrichment of combustion air |
D. | maintaining proper draft in the furnace |
Answer» C. oxygen enrichment of combustion air | |
4. |
The draught or pressure difference for a chimney of height of H metres is given by? |
A. | p = gH( a- g) |
B. | p = gH( g- a) |
C. | p = gH g |
D. | p = gH( a+ g) |
Answer» B. p = gH( g- a) | |