第一章测试1.Which of the following is not a commonly used semiconductor material'? （ ）
A:lead B:germanium C:silicon D:carbon
答案:A
2.The characteristic of an ideal diode are those of a switch that can conduct current（ ） .
A:in one direction only B:in both directions C:depends on the circuit it is used in D:in both directions but in only one direction at a time
答案:A
3.When a diode is doped with either a pentavalent or a trivalent impurity its resistance will （ ） .
A:increase B:decrease C:make the resistance stable against variation due to temperature
答案:B
4.The piecewise linear model, equivalent circuit of the diode consists of （ ）.
A:a battery, a small resistor, and the ideal diode B:a battery and the ideal diode C:the ideal diode D:a junction capacitor, a battery, a small resistor, and the ideal diode
答案:A
5.When a p-n junction is reverse-biased, its junction resistance is （ ）.
A:high B:determined by the components that are external to the device C:low D:constantly changing
答案:A
温馨提示支付 ￥3.00 元后可查看付费内容,请先翻页预览!
