Conducting Materials – 1 – 1

1. At low temperature, the resistivity of metals is proportional to the :

(a) 5th power of absolute temperature
(b) 6th power of absolute temperature
(c) 7th power of absolute temperature
(d) 9th power of absolute temperature

ANSWER
Answer : (a)

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

2. Which of the following doesn’t have forbidden energy gap between valence band and conductor band ?

(a) conductor
(b) insulator
(c) semiconductor
(d) none of the above

ANSWER
Answer : (a)

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

3. The electrical conductivity is directly proportional to :
(1) Electron density
(2) Relaxation time of electrons

(a) both 1 & 2
(b) only 2
(c) only 1
(d) neither 1 nor 2

ANSWER
Answer : (a)

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

4. The electron density in conduction band is proportional to :

(a) donor concentration
(b) square of donor concentration
(c) square root of donor concentration
(d) cube root of donor concentration

ANSWER
Answer : (c)

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

5. Which variety of copper has the best mechanical conductivity ?

(a) Pure annealed copper
(b) hard drawn copper
(c) unpure annealed copper
(d) 
cast copper

ANSWER
Answer : (a)

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

1 2

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.

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