Electronics and Communication Engineering
GATE ECE format:nat PYQs
Build your understanding with focused practice from past exam papers.
How to practice format:nat
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–10 of 239. Imported answers require independent review unless marked reviewed.
Question 30
Open questionECNAT1 markNeeds review
The output voltage
(in Volt) for the network given in the Figure is __. (rounded off to two decimal places) 
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Open questionECNAT1 markNeeds review
Consider the circuit shown in the Figure, where the input
is in Volt. The average power (in mW) dissipated in the load resistance of 1 kΩ at the resonant frequency is __. (rounded off to two decimal places) The circuit is driven by
. 
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Open questionECNAT1 markNeeds review
A wireless digital transmission scheme is using 16-QAM over an additive white Gaussian noise channel and a maximum-likelihood receiver. Consider the information bit rate from source to be 4 × 10⁶ bits per second. The minimum transmission bandwidth (in MHz) of the modulated signal necessary for optimum recovery of information at the receiver is __. (rounded off to two decimal places)
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Open questionECNAT1 markNeeds review
The cutoff frequency (in GHz) for the dominant TE₁₀ mode of an air-filled rectangular waveguide of inner dimension 0.28 inch × 0.14 inch is __. (rounded off to two decimal places).
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For a lossless passive two-port network, |S₁₁| and |S₂₁| intersect at −3 dB. For a lossy passive two-port network, |S₁₁| and |S₂₁| intersect at −4 dB. The percentage of power dissipated in the lossy network at the intersection frequency is __. (rounded off to two decimal places)
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Open questionECNAT1 markNeeds review
The negative edge triggered JK flip-flop in the Figure has J and K inputs tied to Logic High and a square wave of 10 cycles/second is applied to its clock (C) input. The frequency of the output Q (in cycles/second) is __. (rounded off to two decimal places)
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Open questionECNAT2 marksNeeds review
Consider the unity negative feedback control system shown in the Figure. The value of gain
(
) at which the given system will remain marginally stable is ___. (Answer in integer) 
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Open questionECNAT2 marksNeeds review
An n-channel MOSFET is connected as shown in the Figure. Assume
,
, and
and neglect channel length modulation effects. The gate voltage (
) of the n-channel MOSFET (in Volt) is ___. (rounded off to two decimal places) 
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Open questionECNAT2 marksNeeds review
Consider the square region
in the X-Y plane as shown with the dark shading in the Figure. The value of
is ___. (rounded off to two decimal places) 
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Open questionECNAT2 marksNeeds review
Consider an ideal OP-AMP circuit as shown in the Figure. The resistances
. The magnitude of the closed loop gain is ___. (rounded off to two decimal places) 
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