Engineering Thermodynamics
According to Kelvin-Planck’s statement of second law of thermodynamics,

None of these
It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
It is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
An isolated system is one in which

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Engineering Thermodynamics