Semiconductor Materials – 1 – 7

31. Consider the following statements regarding a semiconductor :
1. Acceptor level lies close to valence band.
2. Donor level lies close to valence band.
3. N-type semiconductor behaves as a conductor at 0°K.
4. P-type semiconductor behaves as an insulator at 0°K.

(a) 1 & 2 are correct
(b) 1 & 3 are correct
(c) 1 & 4 are correct
(d) 2 & 3 are correct

ANSWER
Answer : (c)

EXPLANATION
No answer description available for this question. Let us discuss.

32. In a semiconductor, the total current is equal to :

(a) Sum of electron and hole currents flow in same direction
(b) Sum of electron and hole currents flow in opposite directions
(c) Electron current only
(d) Hole current only

ANSWER
Answer : (b)

EXPLANATION
No answer description available for this question. Let us discuss.

33. Semiconductor materials are made up of :

(a) Metallic bond
(b) Ionic bond
(c) Un-shared bond
(d) Covalent bond

ANSWER
Answer : (d)

EXPLANATION
No answer description available for this question. Let us discuss.

34. Consider the statements with respect to semiconductor breakdown.
Statement 1 : The Zener breakdown occurs in junctions which are lightly doped.
Statement 2 : The avalanche breakdown occurs in junctions, which are heavily doped.

(a) Statements 1 & 2 are correct
(b) Only statement 1 is correct
(c) Only statement 2 is correct
(d) Statements 1 & 2 are wrong

ANSWER
Answer : (d)

EXPLANATION
No answer description available for this question. Let us discuss.

35. Current flow in the semiconductor slap is due to :

(a) Drift phenomenon
(b) Diffusion phenomenon
(c) Recombination phenomenon
(d) All of the above

ANSWER
Answer : (d)

EXPLANATION
No answer description available for this question. Let us discuss.

1 2 3 4 5 6 7 8 9 10

Be a Part of The New & Next

MCQs fb  MCQs G+

Share the Knowledge

GATE Total InfoGATE 2019 BooksFree Notes
IES Total InfoIES 2019 BooksFree Mock tests
JAM Total InfoJAM 2019 BooksEngg Diploma
PSUs Total InfoM Tech Total InfoUGC NET Total Info

General Knowledge Books

McqSeries.com is an online forum for multiple choice questions. This forum would be really-really helpful for those candidates who are preparing for examination conducted by Union Public Service Commission (like Civil Services Examination, Engineering Services Examination, Special Class Railway Apprentice, National Defence Academy, Combined Defence Services, etc.), Staff Selection Commission (like Combined Graduate Level, Junior Engineer, Food Corporation of India etc.), various public sector units (like DRDO, DMRC, BARC, BSNL, ONGC, etc.), Graduate Aptitude Test in Engineering, Indian Institute of Technology Entrance Examination etc. and many other national and state level examination.

Leave a Reply

Your email address will not be published. Required fields are marked *

Shares
GATE, IES & PSUs Total Information & GuidanceCheck Here!
Copy Protected by Chetan's WP-Copyprotect.