A chip dissipates 2 kJ of electric work and rejects it as heat transfe – McqOptions

MCQOPTIONS

1.	A chip dissipates 2 kJ of electric work and rejects it as heat transfer from its surface which is at 50°C to 25°C air. How much entropy is generated outside the chip?
A.	0.419 j/k
B.	0.519 j/k
C.	0.619 j/k
D.	0.719 j/k
Answer» C. 0.619 j/k

Discussion

No Comment Found

Related MCQs

When two bodies are in thermal equilibrium with a third body they are also in thermal equilibrium with each other. This statement is called
The value of one bar (in SI units) is equal to
A series of operations, which take place in a certain order & restore the initial condition is known as
During an adiabatic compression when temperature increase by 100% the pressure increases by 1000%. The ratio of specific heats, ? is
During a constant pressure expansion of a gas 33.3 % heat is converted into work while the temperature rises by 20K. The specific heat of gas at constant pressure is
Entropy at absolute zero temperature is zero for a
1.6 Kg of air is expanded at constant pressure from 100 C to 0 C resulting in entropy change of - 2.0 J/K 3.2 Kg of air is cooled at constant volume from 100 C to 0 C with a change in entropy of -3.0 J/K. The ratio Cp/ Cv is
During a polytropic expansion work obtained is 1.8 times the heat transferred. If ?=1.4, n will be
Average temp.at which heat is supplied is increased in
Entropy of mixture of two gases after sudden mixing is