7000+ Digital Electronics MCQ Quiz Questions and Answers Pdf - 2

Question: 6

A semiconductor material is formed by

(A) metallic bonds

(B) electrovalent bonds

(C) covalent bonds

(D) none of the above

Ans: C

covalent bonds

Question: 7

The following are the necessary requirements of an oscillator

(A) amplitude stability

(B) frequency stability

(C) power stability

(D) both a and b

Ans: D

both a and b

Question: 8

A.C. Voltage regulators are widely used in

(A) slip power recovery scheme of slip ring inductor motor

(B) synchronous motor drives

(C) traction drives

(D) fan drives

Ans: D

fan drives

Question: 9

Example of a voltage clamping device

(A) fast acting fuse

(B) snubber circuit

(C) aluminum block

(D) metal oxide varistor

Ans: D

metal oxide varistor

Question: 10

A microprocessor has 24 address lines and 32 data lines. If its uses 10 bits of opcode, the size of its memory buffer register is

(A) 14 bits

(B) 22 bits

(C) 32 bits

(D) 24 bits

Ans: D

24 bits

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