Semiconductors - General Questions (4)

Directions to Solve

Semiconductors - General Questions

25.

As the forward current through a silicon diode increases, the voltage across the diode

A.	increases to a 0.7 V maximum.
B.	decreases.
C.	is relatively constant.
D.	decreases and then increases.

Answer: Option C

Explanation:

No answer description available for this question

26.

There is a small amount of current across the barrier of a reverse-biased diode. This current is called

A.	forward-bias current.
B.	reverse breakdown current.
C.	conventional current.
D.	reverse leakage current.

Answer: Option D

Explanation:

No answer description available for this question

27.

Reverse breakdown is a condition in which a diode

A.	is subjected to a large reverse voltage.
B.	is reverse-biased and there is a small leakage current.
C.	has no current flowing at all.
D.	is heated up by large amounts of current in the forward direction.

Answer: Option A

Explanation:

No answer description available for this question

28.

An atom is made up of

A.	protons.
B.	neutrons.
C.	electrons.
D.	all of the above

Answer: Option D

Explanation:

No answer description available for this question

29.

What factor(s) do(es) the barrier potential of a pn junction depend on?

A.	type of semiconductive material
B.	the amount of doping
C.	the temperature
D.	all of the above
E.	type of semiconductive material and the amount of doping but not the temperature

Answer: Option D

Explanation:

No answer description available for this question

30.

What types of impurity atoms are added to increase the number of conduction-band electrons in intrinsic silicon?

A.	bivalent
B.	octavalent
C.	pentavalent
D.	trivalent
E.	none of the above

Answer: Option C

Explanation:

No answer description available for this question

31.

A reverse-biased diode has the ________ connected to the positive side of the source, and the ________ connected to the negative side of the source.

A.	cathode, anode
B.	cathode, base
C.	base, anode
D.	anode, cathode

Answer: Option A

Explanation:

No answer description available for this question

32.

An ideal diode presents a(n) ________ when reversed-biased and a(n) ________ when forward-biased.

A.	open, short
B.	short, open
C.	open, open
D.	short, short

Answer: Option A

Explanation:

No answer description available for this question

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