1.The digital computer data storage media: (1)Hard disk (2)computer disk (3)RAM
ID: 2988772 • Letter: 1
Question
1.The digital computer data storage media:
(1)Hard disk
(2)computer disk
(3)RAM
(4)cache memory
The correct sequence for the above media, the digital data storage speed in descending order:
(A)2,1,3,4
(B)1,2,3,4
(C)4,3,2,1
(D)4,3,1,2
2.The semiconductor devices
(1)tunnel diode
(2)FET
(3)BJT
(4)IMPATT
The correct sequence of their inherent operating frequency in the increasing order is:
(A)2,3,1,4
(B)3,2,1,4
(C)2,1,3,4
(D)1,4,3,2
3.The following semiconductors materials
(1)si
(2)Ge
(3)GaAs
(4)InP
The correct sequence in increasing order of the majority carrier charge mobility is:
(A)1,2,3,4
(B)4,1,2,3
(C)1,2,4,3
(D)1,4,2,3
4.The input resistance of common emitter stage can be increased by:
(1)Unbypassing emitter resistance
(2)Bootstrapping
(3)Biasing it at low quescent current
(4)Using compounded BJTs
The correct sequence in descending order of the effectiveness of these methods is:
(A)2,4,1,3
(B)4,3,2,1
(C)2,4,3,1
(D)4,2,3,1
5.The wavelength region 1.55
Explanation / Answer
Answer 1. (C)4,3,2,1
Answer 2. (D)1,4,3,2
Answer 3. (D)1,4,2,3
Answer 4. (B)4,3,2,1
Answer 5 (D)2,4 are correct
Answer 6. (D) 2 4 1 3
Answer 7. (D) 3 1 4 2
Answer 8. (D)4,2,1,3
Answer 9. (B) 2 3 4 1
Answer 10. (C)1,3,4,2
Answer 11. (D)3,2,1,4
Answer 12 (D) 2 3 4 1
Answer 13. (C)2,1,3,4
Answer 14. (B)4,3,2,1
Answer 15. (D)1,2,4 are correct
Answer 16. (A)1,2,3,4
Answer 17.(B) 3 1 2 4
Answer 18. (b)1+(M-L)/N
Answer 19. (d)the applied electric field
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