1. in linear proportion to the cross-sectional area
2. in proportion to the diameter of the pipe
3. in inverse proportion to the cross-sectional area
4. in inverse proportion to the square of cross-sectional area
in inverse proportion to the cross-sectional area
1. 20 mm
2. 25 mm
3. 20mm
4. 10 mm
25 mm
1. 5 hours
2. 25.7 min
3. 38.3min
4. unchanged
25.7 min
1. 3 stages and 80% reduction for all three stages
2. 4 stages and 80% reduction for first three stages followed by a finishing stage of 20% reduction
3. 5 stages and reduction of 80%, 80%, 40%, 40%,20% in a sequence
4. none of the above
none of the above
1. 49.925 mm
2. 50 00 mm
3. 50.075 mm
4. None of these
None of these
1. 43.5%
2. 14.8%
3. 14.0%
4. 16.3%
16.3\%
1. 400
2. 1200
3. 3600
4. 4S00
4S00
1. (0.99)4 (0.01)
2. (0.99) (0.01)4
3. 5 x (0.99)(0.01)4
4. 5 x (0.99)4 (0.01)
5 x (0.99)4 (0.01)
1. 800x10-6
2. 500x10-6
3. 1600x10-6
4. 200x10-6
200x10-6
1. 60 degrees
2. 37.4 degrees
3. 30 degrees
4. 45 degrees
30 degrees