Chemical Heat Transfer

Thermal conductivity of a conducting solid material depends upon its_______________?

Byadmin March 3, 2019August 24, 2021

Thermal conductivity of a conducting solid material depends upon its_______________?

A. Temperature
B. Porosity
C. Both A. & B.
D. Neither A. nor B.

Chemical Heat Transfer

In Joule’s experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms-2. Neglecting the heat capacity of agitator, the temperature of water (in °C) is________________?

In Joule’s experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms-2. Neglecting the heat capacity of agitator, the temperature of water (in °C) is________________?

A. 40.5
B. 34.4
C. 26.8
D. 25

Read More In Joule’s experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms-2. Neglecting the heat capacity of agitator, the temperature of water (in °C) is________________?
Chemical Heat Transfer

Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the________________?

Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the________________?

A. Surrounding temperature
B. Average temperature of the fin
C. Temperature of the fin end
D. Constant temperature equal to that of the base

Read More Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the________________?
Chemical Heat Transfer

Low thermal conductivity of heat insulating materials is due to its_________________?

Low thermal conductivity of heat insulating materials is due to its_________________?

A. Dense structure
B. High proportion of air space
C. High specific heat
D. None of these

Read More Low thermal conductivity of heat insulating materials is due to its_________________?
Chemical Heat Transfer

In a shell and tube heat exchanger, square pitch compared to triangular pitch__________________?

In a shell and tube heat exchanger, square pitch compared to triangular pitch__________________?

A. Gives a higher shell side pressure drop
B. Gives a lower shell side pressure drop
C. Can pack more surface area into a shell of given diameter
D. None of these

Read More In a shell and tube heat exchanger, square pitch compared to triangular pitch__________________?
Chemical Heat Transfer

In a shell and tube heat exchanger, floating head is used for _________________?

In a shell and tube heat exchanger, floating head is used for _________________?

A. Large temperature differentials
B. High heat transfer co-efficient
C. Low pressure drop
D. Less corrosion of tubes

Read More In a shell and tube heat exchanger, floating head is used for _________________?
Chemical Heat Transfer

The driving potential for the crystal growth during crystallisation is the _______________ of the solution?

The driving potential for the crystal growth during crystallisation is the _______________ of the solution?

A. Concentration
B. Viscosity
C. Super-saturation
D. Density

Read More The driving potential for the crystal growth during crystallisation is the _______________ of the solution?

Similar Posts