Electronics and Communication Engineering
2026 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ECE 2026 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.
Question 52
Open questionECMCQ2 marksNeeds review
A complex load (in Ω) is represented as
on the Smith chart. A co-axial cable with a characteristic impedance of 50 Ω is connected to the load. The new input impedance of the load now moves to a diametrically opposite point on the same Γ circle on the Smith chart.Which option is the nearest input impedance of the cable connected load (in Ω)?
Your answerChoose one option.
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Open questionECMCQ2 marksNeeds review
A circuit using an ideal OP-AMP is shown in the Figure.
Which of the following options gives the correct value of the current
?Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 54
Open questionECMSQ2 marksNeeds review
Consider an LED based on a direct bandgap semiconductor material with energy bandgap 1.3 eV.
Given: Planck’s constant,
J s and speed of light in free space is
m s
.In which of the following wavelength ranges the LED will NOT emit?
Your answerSelect all correct options. You can choose more than one.
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