Forty percent of the heat supplied is rejected by a reversible heat engine during a cycle of operation.

What will be the COP if this engine is reversed and used as a heat pump?

The ratio between the high and the low working temperatures of a refrigerator based on reversed Carnot Cycle is 0.6. If a heat pump is operated between this same temperature range. what will be the COP of the heat pump?

1200 kl of heat is transferred from a constant temperature system at 700 K to another at 500K (environmental temperature = 300 K). Calculate the loss of available energy associated with this transfer.

In the given image. which of the following curves is applicable when the thermal conductivity of a material increases with increase in temperature?

What is the expression for the maximum blade eff‌iciency of a Parson's turbine? Where, a = jet angle at the entrance.

What will be the cycle eff‌iciency for the maximum work capacity in a gas turbine operating on Brayton cycle? It is given that the Brayton cycle has maximum temperature of 1250 K and minimum temperature of 350K.

What is the Institution of science?

What is Instinct?

What is innovation?

What is the primary means of subsistence in industrialized societies?

What does the word "industrialization" mean?