Engineering Thermodynamics
An isolated system is one in which

Neither mass nor energy crosses the boundaries of the system
Both energy and mass cross the boundaries of the system
Mass crosses the boundary but not the energy
Mass does not cross boundaries of the system, though energy may do so

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
Otto cycle consists of

Two constant volume and two isentropic processes
Two constant pressure and two isentropic processes
One constant pressure, one constant volume and two isentropic processes
Two constant volume and two isothermal processes

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
The door of a running refrigerator inside a room was left open. Which of the following statements is correct?

The temperature of the air in room will remain unaffected
The room will be cooled to the temperature inside the refrigerator
The room will be gradually warmed up
The room will be cooled very slightly

ANSWER DOWNLOAD EXAMIANS APP