Question

A Carnot heat engine runs between a cold reservoir at temperature TC and a hot reservoir at temperature TH. You want to increase its efficiency. Of the following, which change results in the greatest increase in efficiency? The value of ΔT is the same for all changes. A. Raise the temperature of the hot reservoir by ΔT B. Raise the temperature of the cold reservoir by ΔT C. Lower the temperature of the hot reservoir by ΔT D. Lower the temperature of the cold reservoir by ΔT E. Lower the temperature of the hot reservoir by 1/2ΔT and raise the temperature of the cold reservoir by 1/2ΔT. A heat engine that in each cycle does positive work and loses energy as heat, with no heat energy input, would violate: A. the zeroth law of thermodynamics B. the first law of thermodynamics C. the second law of thermodynamics D. the third law of thermodynamics E. Newton's second law

          A Carnot heat engine runs between a cold reservoir at temperature TC and a hot reservoir at temperature TH. You want to increase its efficiency. Of the following, which change results in the greatest increase in efficiency? The value of ΔT is the same for all changes. A. Raise the temperature of the hot reservoir by ΔT B. Raise the temperature of the cold reservoir by ΔT C. Lower the temperature of the hot reservoir by ΔT D. Lower the temperature of the cold reservoir by ΔT E. Lower the temperature of the hot reservoir by 1/2ΔT and raise the temperature of the cold reservoir by 1/2ΔT.

A heat engine that in each cycle does positive work and loses energy as heat, with no heat energy input, would violate: A. the zeroth law of thermodynamics B. the first law of thermodynamics C. the second law of thermodynamics D. the third law of thermodynamics E. Newton's second law

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