1. 0.5 m
2. 0.1 m
3. 0.2 m
4. 0.5 m
0.1 m
1. Added insulation will increase heat loss
2. Added insulation will decrease heat loss
3. Convention heat loss will be less than conduction heat loss
4. Heat flux will decrease
Added insulation will increase heat loss
1. In conduction, reduction in the thickness of the material and an increase in the thermal conductivity
2. In convection, stirring of the fluid and clearing the heating surface
3. In radiation, increasing the temperature and reducing the emissivity
4. All of these
All of these
1. 6.8 W
2. 3.4 W
3. 1.7 W
4. 0.17 W
6.8 W
1. An insulator
2. Conductor & Insulator
3. A superconductor
4. A fin
Conductor & Insulator
1. It reduces the heat loss from the conductor and thereby enables the conductor to carry a higher current
2. It increases the heat loss from the conductor and thereby enables the conductor to carry a higher current
3. It increases the thermal resistance of the insulation and thereby enables the conductor to carry a higher current
4. It radius the thermal resistance of the insulation and thereby enables the conductor to carry a higher current
It increases the heat loss from the conductor and thereby enables the conductor to carry a higher current
1. A rigid vessel containing steam at 1500 C left in the atmosphere which is at 250 C
2. 1 kg of gas contained in a insulated cylinder expanding as the piston move slowly outwards
3. A rigid vessel containing ammonia gas connected through a valve to a evacuated rigid vessel, the vessel, the value and the connecting pipes being well insulated and the valve being opened and after a time, conditions though the two vessel becoming uniform
4. 1 kg or air flowing adiabatically from the atmosphere into a previously evacuated bottle
A rigid vessel containing ammonia gas connected through a valve to a evacuated rigid vessel, the vessel, the value and the connecting pipes being well insulated and the valve being opened and after a time, conditions though the two vessel becoming uniform
1. Zeroth Law of Thermodynamics
2. First Law of Thermodynamics
3. Second Law of Thermodynamics
4. Third Law of Thermodynamics
Second Law of Thermodynamics
1. 18 mm
2. 16 mm
3. 12 mm
4. 8 mm
18 mm
1. 1 and 2 are correct
2. 2 and 4 are correct
3. 1 and 3 are correct
4. 2 and 3 are correct
2 and 4 are correct