Engineering Thermodynamics
In an isothermal process, the internal energy of gas molecules

Increases
Remain constant
Decreases
May increase/decrease depending on the properties of gas

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
According to Clausius statement of second law of thermodynamics

Heat can
Heat can be transferred for low temperature to high temperature source by using refrigeration cycle
Heat can
Heat can be transferred from low temperature to high temperature source if COP of process is more than unity

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
Coke is produced

By heating wood with a limited supply of air to a temperature not less than 280°C
When coal is first dried and then crushed to a fine powder by pulverizing machine
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel
From the finely ground coal by moulding under pressure with or without a binding material

ANSWER DOWNLOAD EXAMIANS APP