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

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

40.5

34.4

26.8

25

40.5

34.4

26.8

25

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
LMTD for counterflow and prallel flow heat exchanger will be the same, when the

Outlent temperature of both the hot and cold fluid are same

Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid)

None of these

Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid

Outlent temperature of both the hot and cold fluid are same

Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid)

None of these

Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
In the equation Q = UAΔt; Δt is

The difference of average bulk temperatures of hot and cold fluids

Geometric mean temperature difference

Logarithmic mean temperature difference

Arithmetic mean temperature difference

The difference of average bulk temperatures of hot and cold fluids

Geometric mean temperature difference

Logarithmic mean temperature difference

Arithmetic mean temperature difference

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
In counter flow compared to parallel flow,

LMTD is greater

Less surface area is required for a given heat transfer rate

More surface area is required for a given heat transfer rate

Both A and B

LMTD is greater

Less surface area is required for a given heat transfer rate

More surface area is required for a given heat transfer rate

Both A and B

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the

Heat transfer area

None of these

Heating volume

Nusselt number

Heat transfer area

None of these

Heating volume

Nusselt number

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is

3000

9000

4000

4600

3000

9000

4000

4600

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer

Heat Transfer LMTD for counterflow and prallel flow heat exchanger will be the same, when the

Heat Transfer In the equation Q = UAΔt; Δt is

Heat Transfer In counter flow compared to parallel flow,

Heat Transfer The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the

Heat Transfer An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is

Heat Transfer
LMTD for counterflow and prallel flow heat exchanger will be the same, when the

Heat Transfer
In the equation Q = UAΔt; Δt is

Heat Transfer
In counter flow compared to parallel flow,

Heat Transfer
The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the

Heat Transfer
An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is