Multiple Choice Questions and Answers on Semiconductor Theory
Q31. The leakage current in a pn junction is of the order of
- Aa
- mA
- kA
- µA
Answer : 4
Q32. In an intrinsic semiconductor, the number of free electrons ………
- Equals the number of holes
- Is greater than the number of holes
- Is less than the number of holes
- None of the above
Answer : 1
Q33. At room temperature, an intrinsic semiconductor has ……….
- Many holes only
- A few free electrons and holes
- Many free electrons only
- No holes or free electrons
Answer : 2
Q34. At absolute temperature, an intrinsic semiconductor has ……….
- A few free electrons
- Many holes
- Many free electrons
- No holes or free electrons
Answer : 4
Q35. At room temperature, an intrinsic silicon crystal acts approximately as ……
- A battery
- A conductor
- An insulator
- A piece of copper wire
Answer : 3
Q36. Under normal conditions a diode conducts current when it is ……………
- reverse biased
- forward biased
- avalanched
- saturated
Answer : 2
Q37. The term bias in electronics usually means ……….
- the value of ac voltage in the signal.
- the condition of current through a pn junction.
- the value of dc voltages for the device to operate properly.
- the status of the diode.
Answer : 3
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