Electronics and Communication Engineering
2021 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ECE 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 37–39 of 65. Imported answers require review unless explicitly marked reviewed.
Question 27
Open questionECMCQ2 marksNeeds review
A box contains the following three coins.
I. A fair coin with head on one face and tail on the other face.
II. A coin with heads on both the faces.
III. A coin with tails on both the faces.
A coin is picked randomly from the box and tossed. Out of the two remaining coins in the box, one coin is then picked randomly and tossed. If the first toss results in a head, the probability of getting a head in the second toss is
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Open questionECMCQ2 marksNeeds review
The switch in the circuit in the figure is in position P for a long time and then moved to position Q at time
. 
The value of
at
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Open questionECMCQ2 marksNeeds review
Consider the two-port network shown in the figure.
The admittance parameters, in siemens, are
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