Question 2Which of the following is true of Carnot efficiency?
A. Carnot efficiency is the same as thermal efficiency
B. Carnot efficiency is calculated using carnots
Carnot efficiency is the maximum possible efficiency for a thermal heat engineincorrect
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Question 1Energy and power are?
A. Related by the following equation Power = energy/time
B. The same thing
C. Related to electricity only
硅材料的禁带宽度为( )eV。
A. 0.7
B. 1.4
C. 2.6
D. 1.12
本征半导体中,电子和空穴不一定是成本出现的。( )
在PN结的形成过程中,多数载流子的扩散和少数载流子漂移运动最终达到平衡,使PN结的宽度一定( )
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