Basic Electronics (3110016) MCQs

MCQs of Diode theory and applications

Showing 31 to 40 out of 108 Questions
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31.
The leakage current in a PN junction is of the order of _______.
(a) A
(b) mA
(c) kA
(d) µA
Answer:

Option (d)

32.
In an intrinsic semiconductor, the number of free electrons ________.
(a) Equals the number of holes
(b) Is greater than the number of holes
(c) Is less than the number of holes
(d) None of the above
Answer:

Option (a)

33.
At room temperature, an intrinsic semiconductor has _______.
(a) Many holes only
(b) A few free electrons and holes
(c) Many free electrons and holes
(d) No holes or free electrons
Answer:

Option (b)

34.
At absolute temperature, an intrinsic semiconductor has _______.
(a) A few free electrons
(b) Many holes
(c) Many free electrons
(d) No holes or free electrons
Answer:

Option (d)

35.
At room temperature, an intrinsic silicon crystal acts approximately as ________.
(a) A battery
(b) A conductor
(c) An insulator
(d) A piece of copper wire
Answer:

Option (d)

36.
A crystal diode has_____.
(a) One PN junction
(b) Two PN junctions
(c) Three PN junctions
(d) None of the above
Answer:

Option (a)

37.
A crystal diode has forward resistance of the order of _______.
(a) KΩ
(b) Ω
(c) MΩ
(d) None of the above
Answer:

Option (b)

38.
If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is ______ biased.
(a) Forward
(b) Reverse
(c) Either forward or reverse
(d) None of the above
Answer:

Option (a)

39.
The reverse current in a diode is of the order of ______.
(a) KA
(b) mA
(c) µA
(d) A
Answer:

Option (c)

40.
The forward voltage drop across a silicon diode is about ______.
(a) 2.5 V
(b) 3 V
(c) 10 V
(d) 0.7 V
Answer:

Option (d)

Showing 31 to 40 out of 108 Questions
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