Electronics and Communication Engineering
GATE ECE format:mcq PYQs
Build your understanding with focused practice from past exam papers.
Questions 311–320 of 426. Imported answers require independent review unless marked reviewed.
Question 36
Open questionECMCQ2 marksNeeds review
Two identical copper wires W1 and W2, placed in parallel as shown in the figure, carry currents
and
, respectively, in opposite directions. If the two wires are separated by a distance of
, then the magnitude of the magnetic field
between the wires at a distance
from W1 is 
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Open questionECMCQ2 marksNeeds review
The dispersion equation of a waveguide, which relates the wavenumber
to the frequency
, is
where the speed of light
m/s, and
is a constant. If the group velocity is
m/s, then the phase velocity isYour answerChoose one option.
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Open questionECMCQ2 marksNeeds review
In the circuit shown, the breakdown voltage and the maximum current of the Zener diode are 20 V and 60 mA, respectively. The values of
and
are 200
and 1 k
, respectively. What is the range of
that will maintain the Zener diode in the ‘on’ state? 
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Open questionECMCQ2 marksNeeds review
The state transition diagram for the circuit shown is
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Open questionECMCQ2 marksNeeds review
In the circuits shown, the threshold voltage of each nMOS transistor is 0.6 V. Ignoring the effect of channel length modulation and body bias, the values of Vout1 and Vout2, respectively, in volts, are
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Open questionGAMCQ1 markNeeds review
“By giving him the last _____ of the cake, you will ensure lasting _____ in our house today.”
The words that best fill the blanks in the above sentence are
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Open questionGAMCQ1 markNeeds review
“Even though there is a vast scope for its ________, tourism has remained a/an ________ area.”
The words that best fill the blanks in the above sentence are
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Open questionGAMCQ1 markNeeds review
If the number 715■423 is divisible by 3 (■ denotes the missing digit in the thousands place), then the smallest whole number in the place of ■ is ________.
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Open questionGAMCQ1 markNeeds review
What is the value of
?Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
A 1.5 m tall person is standing at a distance of 3 m from a lamp post. The light from the lamp at the top of the post casts her shadow. The length of the shadow is twice her height. What is the height of the lamp post in meters?
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