Complete GATE ECE 2017 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 7–9 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 3 of 22

Question 7

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ECNAT1 markNeeds review
In the circuit shown, the positive angular frequency

(in radians per second) at which the magnitude of the phase difference between the voltages

and

equals

radians, is ______.
Diagram for Electronics and Communication Engineering question 7


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Question 8

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ECMCQ1 markNeeds review
A periodic signal

has a trigonometric Fourier series expansion

If

, we can conclude that
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Question 9

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ECMCQ1 markNeeds review
A bar of Gallium Arsenide (GaAs) is doped with Silicon such that the Silicon atoms occupy Gallium and Arsenic sites in the GaAs crystal. Which one of the following statements is true?
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