Which of the following statement is true for Heat pump?
- Heat Pump is just reverse of a Heat engine.
- Temperature of sink > Temperature of heat source
- Temperature of heat source > Temperature of sink
- A refrigerator cannot work without some external work done on the system, i.e., the coefficient of performance \(\left( {\alpha = \frac{{{Q_2}}}{W}} \right)\) cannot be infinite.
Choose one of the following
1
a, b & d are correct statement
2
a & b are only correct
3
all of the above statement is incorrect
4
a, c & d are correct statement
5
Question Not Attempted