1. Equal to one
2. Greater than one
3. Less than one
4. Greater than one but less than two
Greater than one
1. 1 and 3 are correct
2. 2 and 4 are correct
3. 1 and 2 are correct
4. 3 and 4 are correct
1 and 2 are correct
1. 1, 2 and 3 are correct
2. 1, 2 and 4 are correct
3. 2, 3 and 4 are correct
4. 1, 3 and 4 are correct
1, 3 and 4 are correct
1. 2q0/R
2. 2q0
3. q0/R
4. q0/R2
2q0/R
1. Insulated pipes carrying hot water
2. Refrigerator freezer coil
3. Boiler furnaces
4. Condensation of steam in a condenser
Boiler furnaces
1. 5600 C
2. 2000 C
3. 9200 C
4. 11200 C
9200 C
1. 400 C
2. 500 C
3. 550 C
4. 1000 C
550 C
1. Material with higher thermal conductivity should be used for the inner layer and one with layer and one with lower thermal conductivity for the outer
2. Material with lower thermal conductivity should be used for the inner layer and one with higher thermal conductivity for the outer
3. It is immaterial in which sequence the insulating material are used
4. It is not possible to judge unless numerical values of dimensions are given
Material with lower thermal conductivity should be used for the inner layer and one with higher thermal conductivity for the outer
1. Copper
2. Steel
3. Glass-wool
4. Refractory brick
Glass-wool
1. 3 i + 8 j
2. i
3. 0.6 i + 0.8 j
4. 0.5 i + 0.866 j
3 i + 8 j