Semiconductor Materials – 2 – 4

66. The acceptor atoms in a P-type semiconductor at normal temperature :

(a) Carry a positive charge
(b) Carry a negative charge
(c) Are neutral
(d) Are ions

ANSWER
Answer : (c)

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

67. In a semiconductor crystal, if the current flows due to breakage of crystal bonds, then the semiconductor is called :

(a) Acceptor
(b) Donor
(c) Intrinsic semiconductor
(d) Extrinsic semiconductor

ANSWER
Answer : (c)

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

68. Drift current in germanium is caused by :

(a) Concentration gradient of charge carriers
(b) Thermal agitation of crystal lattice
(c) Incidence of light energy
(d) Applied electric field

ANSWER
Answer : (d)

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

69. In a given semiconductor, Fermi level E is proportional to (n = total number of free electrons per unit volume).

(a) n
(b) n1/2
(c) n2/3
(d) n4/3

ANSWER
Answer : (c)

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

70. Resistivity of semiconductor depends on :

(a) The length of the specimen
(b) Cross-sectional area of the specimen
(c) Volume of the specimen
(d) Atomic nature of the semiconductor

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Your email address will not be published.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.