MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject 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) | |