Electronics and Communication Engineering
2018 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ECE 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 34–36 of 65. Imported answers require review unless explicitly marked reviewed.
Question 24
Open questionECNAT1 markNeeds review
Taylor series expansion of
around
has the form
The coefficient
(correct to two decimal places) is equal to ______.Log in to check the answer
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Open questionECNAT1 markNeeds review
The ABCD matrix for a two-port network is defined by:
The parameter
for the given two-port network (in ohms, correct to two decimal places) is ________.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 26
Open questionECMCQ2 marksNeeds review
The circuit shown in the figure is used to provide regulated voltage (5 V) across the 1 kΩ resistor. Assume that the Zener diode has a constant reverse breakdown voltage for a current range, starting from a minimum required Zener current,
mA to its maximum allowable current. The input voltage
may vary by 5% from its nominal value of 6 V. The resistance of the diode in the breakdown region is negligible. 
The value of R and the minimum required power dissipation rating of the diode, respectively, are
Your answerChoose one option.
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