Two steam engines 'A' and 'B', have their sources respectively at 700K and 650 K and their sinks at 350 K and 300K. Then

Two carnote engines A and B have their sources at 1000 K and 1100 K and their sinks are at 400 K and 500 K respectively. If eta_(A) and eta_(B) are their efficiencies,

Two engines A and B have their sources at 400 K and 350 K and sinks at 350 K and 300 K respectively. Which engine is more efficient and by how much ?

Two engines A and B have their sources at 400 K and 350 K and sinks at 350 K and 300 K respectively. Which is more efficient and by how much ?

Two carnot engine A and B operate respectively between 500 K and 400 K , and 400 K and 300 K . What is the percentage difference in their efficiencies ?

Two Carnot engines A and B operate respectively between 500 K and 400 K and 300 K. What is the difference in their efficiencies (in percentage)?

Two Carnot engines A and B are operated is succession. The first one A receives heat from a source at T_(1)=800K and rejects to a sink at T_(2)K . The second engine B receives hence rejected by the first engine and rejects the another sink at T_(3) =300K. If the efficiencies of two engines are equal, then the value of T_(2) is

The rate constants of a reaction at 300K and 280 K respectively are K_(1) and K_(2) . Then

Two Carnot engines A and B are operated in succession. The first one , A receives heat from a source at T_1 = 800 K and rejects to sink at T_2K . The second engine B receives heat rejected by the first engine and rejects to another sink at T_3 = 300K . If the work outputs of two engines are equal , them the value of T_2 is