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

4
Correct Answer :

Added insulation will increase heat loss


Explanation :
No Explanation available for this question

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

4
Correct Answer :

All of these


Explanation :
No Explanation available for this question

1.  An insulator

2.  Conductor & Insulator

3.  A superconductor

4.  A fin

4
Correct Answer :

Conductor & Insulator


Explanation :
No Explanation available for this question

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

4
Correct Answer :

It increases the heat loss from the conductor and thereby enables the conductor to carry a higher current


Explanation :
No Explanation available for this question

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

4
Correct Answer :

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


Explanation :
No Explanation available for this question

1.  Zeroth Law of Thermodynamics

2.  First Law of Thermodynamics

3.  Second Law of Thermodynamics

4.   Third Law of Thermodynamics

4
Correct Answer :

Second Law of Thermodynamics


Explanation :
No Explanation available for this question

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