Electronics and Communication Engineering
2025 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ECE 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 31
Open questionECMSQ1 markNeeds review
Which of the following can be used as an n-type dopant for silicon? Select the correct option(s).
Your answerSelect all correct options. You can choose more than one.
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Open questionECNAT1 markNeeds review
The function
satisfies
where
and
denote the first and second derivatives of
, respectively.Given
and
, the maximum value of
over
is _____ (rounded off to two decimal places).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 33
Open questionECNAT1 markNeeds review
The generator matrix of a
binary linear block code is given below.
The minimum Hamming distance
between codewords equals _____ (answer in integer).Log in to check the answer
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