Heat and Mass Transfer
In free convection heat transfer, Nusselt number is function of

Grashoff number and Reynold number
Prandtl number and Reynold number
Grashoff number, Prandtl number and Reynold number
Grashoff number and Prandtl number

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
The time constant of a thermocouple is

The time taken to attain the final temperature to be measured
The time taken to attain 50% of the value of initial temperature difference
Determined by the time taken to reach 100°C from 0°C
The time taken to attain 63.2% of the value of initial temperature difference

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
Film coefficient is defined as the ratio of

Thickness of film of fluid to the thermal conductivity
Thickness of film of fluid to the temperature drop through the films of fluids
Temperature drop through the films of fluids to the thickness of film of fluids
Thermal conductivity to the equivalent thickness of the film of fluid

ANSWER DOWNLOAD EXAMIANS APP