Digital Electronics MCQ Questions & Answers

Digital Electronics MCQ Questions & Answers | ECE

Learn Digital Electronics MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Digital Electronics MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-9 section-3

Consider the following gate network
Digital Electronics mcq question image

Which one of the following gates is redundant?

A) Gate No. 1 B) Gate No. 2 C) Gate No. 3 D) Gate No. 4

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The logic circuit realized by the circuit shown in the given figure will be
Digital Electronics mcq question image

A) $${\text{B}} \odot {\text{C}}$$ B) $${\text{F}} = {\text{B}} \oplus {\text{C}}$$ C) $${\text{A}} \odot {\text{C}}$$ D) $${\text{F}} = {\text{A}} \oplus {\text{C}}$$

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

If (0.100)₂ = (x)₁₀, then x is

A) 0.5 B) 0.1 C) 0.2 D) 0.01

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

If the input to a T flip-flop is a 100 MHz signal, the final output of three T flip-flop in a cascadeis:

A) 1000 MHz B) 520 MHz C) 333 MHz D) 12.5 MHz

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In a JK flip-flop, J is connected to $$\overline {\text{Q}} $$ and K is connected to Q outputs. The JK flip-flop converts into a

A) R-S flip flop B) D flip flop C) T flip flop D) Clocked R-S flip flop

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

A semiconductor RAM has a 12-bit address register and an 8-bit data register. The total number of bits in the memory is

A) 256 bits B) 4,096 bits C) 32,768 bits D) 10,48,756 bits

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The canonical SOP form of given expression f = A + AB + ABC is

A) Σm(4, 5, 6, 7) B) Σm(1, 2, 3, 4) C) Σm(1, 3, 6, 7) D) Σm(1, 7, 4)

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Maximum value of signal to noise ratio of an 8 bit ADC with an I/P range of 10 V will be

A) 50 dB B) 43.8 dB C) 48.9 dB D) 49.8 dB

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In the below circuit, X is given by
Digital Electronics mcq question image

A) $${\text{X}} = {\text{A}}\overline {\text{B}} \overline {\text{C}} + \overline {\text{A}} {\text{B}}\overline {\text{C}} + \overline {\text{A}} \overline {\text{B}} {\text{C}} + {\text{ABC}}$$ B) $${\text{X}} = \overline {\text{A}} {\text{BC}} + {\text{A}}\overline {\text{B}} {\text{C}} + {\text{AB}}\overline {\text{C}} + \overline {\text{A}} \overline {\text{B}} \overline {\text{C}} $$ C) $${\text{X}} = {\text{AB}} + {\text{BC}} + {\text{AC}}$$ D) $${\text{X}} = \overline {{\text{AB}}} + \overline {{\text{BC}}} + \overline {{\text{AC}}} $$

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A 0-10 volt analog to digital converter requires to have a resolution of 0.025%. The rms value of quantization error will be

A) 176 micro volt B) 705 micro volt C) 352 micro volt D) 1410 micro volt

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board