Instrumentation Engineering
GATE IN topic:analog-electronics PYQs
Build your understanding with focused practice from past exam papers.
Questions 31–40 of 65. Imported answers require independent review unless marked reviewed.
Question 14
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The diode used in the circuit has a fixed voltage drop of 0.6 V when forward biased. A signal
is given to the ideal OpAmp as shown. When
is at its positive peak, the output (
) of the OpAmp in volts is _____. 
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The transistor Q₁ has a current gain
and the transistor Q₂ has a current gain
. The current
in microampere is ______.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 30
Open questionINMCQ2 marksNeeds review
The output
of the ideal OpAmp used in the circuit shown below is 5 V. Then the value of resistor
in kilo ohm (k
) is
Your answerChoose one option.
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A J-type thermocouple has an output voltage
V, where
is the junction temperature in Celsius (°C). The thermocouple is used with reference junction compensation, as shown in the figure. The Instrumentation amplifier used has a gain G = 20. If
is 1 °C, for an input
of 100 °C, the output
of the instrumentation amplifier in millivolt is
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 47
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The circuit shown below uses an ideal OpAmp. Output
in volt is ______ (rounded off to one decimal place).
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All the transistors used in the circuit are matched and have a current gain
of 20. Neglecting the Early effect, the current
in milliampere is _____.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 7
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If the diodes in the circuit shown are ideal and the breakdown voltage
of the Zener diode is 5 V, the power dissipated in the 100
resistor (in watts) is ____. 
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 17
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Assuming ideal opamps, the output voltage at
in the figure shown (in volts) is ____. 
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Assume that the opamp in the circuit shown is ideal. The value of
(in k
) is ____. 
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 39
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If the opamps in the circuit shown are ideal and
mV, the steady state value of
(in volts, rounded off to two decimal places) is ____
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