Fundamentals Of Thermodynamics

1. The ability of matter to store quantity of heat.

Thermal capacity

Thermal energy

Heat loss

Heat gain

2. Consider a system whose temperature is 18^oC. Express this temperature in ^oR.

524.4

291.2

64.4

18

3. The amount of energy in a physical system that cannot be used to do work.

Enthalpy

Entropy

Pressure

Time

4. He introduced the concept and statement of First law of Thermodynamics in 1850.

Nicolas James Carnot

Rodulf Julius Emmanuel Clausius

Enriv Yasilad

Nicolas Sadi Carnot

5. A 5 kg rock is thrown upward with a force of 150 N at a location where the local gravitational acceleration is 9.79 m/s². Determine the acceleration of the rock in m/s².

15.0

17.2

20.2

22.2

6. A 150 lb_m astronaut took his bathroom scale (a spring scale) and a beam scale (compares masses) to the moon where the local gravity is a = 5.48 ft/s². Determine how much she or he will weigh on the beam scale?

25.5 lbm

150 lbm

25.5 lbf

150 lbf

7. A Carnot cycle acting as a heat engine, usually illustrated on a ..

Pressure-enthalpy diagram

Temperature-entropy diagram

Pressure-volume diagram

Enthalpy-entropy diagram

8. He is considered one of the founders of the science of thermodynamics and introduced the concept of reversible cycle in1824.

Nicolas James Carnot

Rodulf Julius Emmanuel Clausius

Enriv Yasilad

Nicolas Sadi Carnot

9. Calculate the force necesssary to accelerate a 20,000 lb_m rocket vertically upward at a rate of 100 ft/s².

20,000 lbf

62,162 lbf

82,162 lbf

82,200lbf

10. A refrigerator for food storage operates as a reversed Carnot heat engine cycle. The store is to be maintained at a temperature of –5^oC and the heat transfer from the store to the cycle is at the rate of 5 kW. If heat is transferred from the cycle to the atmosphere at a temperature of 25^oC, calculate the power required to drive the plant.

1 kW

0.94 kW

0.65 kW

0.56 kW

Fundamentals Of Thermodynamics

1. The ability of matter to store quantity of heat.

2.

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2. Consider a system whose temperature is 18oC. Express this temperature in oR.