1. wood
2. air
3. water at 1000C
4. steam at 1 bar
air
1. The outer radius of the pipe is equal to the critical radius
2. The outer radius of the pipe is less than the critical radius
3. Adding the insulation will reduce the heat loss
4. adding the insulation will increase the heat loss
Adding the insulation will reduce the heat loss
1. zero
2. 3.58
3. 5
4. 7.16
zero
1. 1000
2. 1500
3. 2000
4. 2500
1500
1. A-5, B-6, C-2, D-3
2. A-5, B-6, C-2, D-1
3. A-5, B-6, C-1, D-4
4. A-5, B-3, C-2, D-4
A-5, B-6, C-2, D-3
1. 2.93
2. 5.86
3. 6.66
4. 13.33
2.93
1. 0.2
2. 2
3. 200
4. 2000
2
1. 2.45 and 817
2. 2.45 and 345
3. 3.02 and 2043
4. 3.02 and 33
3.02 and 2043
1. 15.71
2. 10.21
3. 6.77
4. 4.39
4.39
1. P-2, Q-3, R-4, S-1
2. P-2, Q-4, R-3, S-1
3. P-3, Q-2, R-4, S-1
4. P-2, Q-3, R-1, S-4
P-2, Q-3, R-4, S-1