A Heat Engine Operating Between the Temperatures T₁ and T₂

question 56

Multiple Choice

A heat engine operating between the temperatures T₁ and T₂ takes in Q₁ calories at temperature T₁ and gives up Q₂ calories at temperature T₂.The efficiency of this heat engine is

• A)(Q₁ - Q₂)/Q₂
• B)(Q₁ - Q₂)/Q₁
• C)(T₂ - T₁)/T₂
• D)Q₂/(Q₁ - Q₂)
• E)T₁/(T₁ - T₂)

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Definitions:

Tire Life

The expected or actual duration of serviceability of a tire before it needs to be replaced due to wear, damage, or age.

Unitized Hub System

A hub assembly in vehicles where the bearing and hub are integrated into a single unit, simplifying installation and maintenance, commonly used in commercial and passenger vehicles.

Wheel Bearing

A crucial part in the wheel's hub assembly, allowing for smooth rotation of the wheel around the axle and minimizing friction.

Periodic Topping

The practice of regularly adding a small amount of fluid to keep a system’s level within operational limits, such as in hydraulic systems or batteries.