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Computer Science Engineering (CSE) Exam  >  Computer Science Engineering (CSE) Tests  >  GATE Computer Science Engineering(CSE) 2025 Mock Test Series  >  Test: Combinational Circuit- 2 - Computer Science Engineering (CSE) MCQ

Test: Combinational Circuit- 2 - Computer Science Engineering (CSE) MCQ


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15 Questions MCQ Test GATE Computer Science Engineering(CSE) 2025 Mock Test Series - Test: Combinational Circuit- 2

Test: Combinational Circuit- 2 for Computer Science Engineering (CSE) 2024 is part of GATE Computer Science Engineering(CSE) 2025 Mock Test Series preparation. The Test: Combinational Circuit- 2 questions and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus.The Test: Combinational Circuit- 2 MCQs are made for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Combinational Circuit- 2 below.
Solutions of Test: Combinational Circuit- 2 questions in English are available as part of our GATE Computer Science Engineering(CSE) 2025 Mock Test Series for Computer Science Engineering (CSE) & Test: Combinational Circuit- 2 solutions in Hindi for GATE Computer Science Engineering(CSE) 2025 Mock Test Series course. Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free. Attempt Test: Combinational Circuit- 2 | 15 questions in 45 minutes | Mock test for Computer Science Engineering (CSE) preparation | Free important questions MCQ to study GATE Computer Science Engineering(CSE) 2025 Mock Test Series for Computer Science Engineering (CSE) Exam | Download free PDF with solutions
Test: Combinational Circuit- 2 - Question 1
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The following circuit

Can be represented as:

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From the given diagram we can see that

Test: Combinational Circuit- 2 - Question 2
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The circuit shown below converts.

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if input is 1010 it generate 1101 which is same as gray to binary code converter.

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Test: Combinational Circuit- 2 - Question 3
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The output of the circuit shown in following figure is equal to

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Hence (b) is the correct option.

Test: Combinational Circuit- 2 - Question 4
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The circuit given in figure is to be used to implement the function   What is the values should be selected I and J?
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Test: Combinational Circuit- 2 - Question 5
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Minimum number of NAND gates required to implement sum in half-adder circuit is:
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Test: Combinational Circuit- 2 - Question 6
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The following circuit is an implemented of:

1. Sum of full adder
2. Carry of half adder
3. Difference of full subtracte
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From the given circuit


For which only 1 and 3 satisfy. Hence correct option is (d),

Test: Combinational Circuit- 2 - Question 7
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The circuit below represents function X{A, B, C, D) as:
Detailed Solution for Test: Combinational Circuit- 2 - Question 7

The given circuit represents the implementation of four variable function using 8: 1 MUX here. D as taken as the fourth i/p and A, B, C act as select lines.

Test: Combinational Circuit- 2 - Question 8
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If half adders and full adders are implemented using gates, then for the addition of two 17 bit numbers (using minimum gates) the number of half adders and full adders required will be 
Detailed Solution for Test: Combinational Circuit- 2 - Question 8

As we know that n bit full adder circuit can represent (n + 1) bits sum. In order to represent addition of two 17 bits numbers we require minimum of 16 full adder and 1 half adder.
Note: For the first bit we can use either HA or FA. Hence, for addition of two 17 bit numbers inspire of 17 full adders we can perform the same task using 16 FA and 1 HA.
Hence (c) is the correct option.

Test: Combinational Circuit- 2 - Question 9
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To realize following function 'f'

How many minimum number of 2 input NAND gates are required
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So it required 10 NAND gates.

Test: Combinational Circuit- 2 - Question 10
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Minimum number of 2 x 1 multiplexers required to realize the following function,  Assume that inputs are available only in true forr and Boolean constants.1 and 0 are available.
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Test: Combinational Circuit- 2 - Question 11
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The number of full and half-adder required to add 16-bit numbers is
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To 16 bits number, 1 half and 15 full address or 16 full address are required.

Test: Combinational Circuit- 2 - Question 12
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 How many 3-to-8 line decoders with an enable input are needed to construct a 6-to-64 line decoder without using any other logic gates?
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Test: Combinational Circuit- 2 - Question 13
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The following circuit implements a two-input AND gate using two 2-1 multiplexers.

What are the values of X1 X2, X3?
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Test: Combinational Circuit- 2 - Question 14
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Consider excess-3 code that is used to represent integers 0 through 9 as shown below:

Which of the following expressions is the correct one for an invalid code?
Detailed Solution for Test: Combinational Circuit- 2 - Question 14

Invalid code words are 0, 4, 4, 8, 11, 5.

So code will be a'c'd' + b'c'd' + bed + acd.

Test: Combinational Circuit- 2 - Question 15
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What logic function is performed by the circuit shown below:
Detailed Solution for Test: Combinational Circuit- 2 - Question 15


Hence the given circuit represents Half adder.

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