OpenMentor Logo
GATE-openmentor
Back to Sections
Type:

Analog Electronics

30 Questions
GATE→2026→Analog Electronics→Analog Electronics
Q1
MCQ[1 Mark]
A common gate amplifier represents a
GATE→2026→Analog Electronics→Analog Electronics
Q2
MCQ[1 Mark]
In the circuit shown, the BJT has a β\beta of 100. The base-emitter junction voltage is 0.65 V. The quiescent collector current, ICI_{C} is mA.
Figure for Question 2
GATE→2026→Analog Electronics→Analog Electronics
Q3
MCQ[2 Marks]
In the circuit shown below, R is 1 k\Omega and R_{f} is 10 k\Omega. If V_{in} is 100 mV and the op-amps have supply voltages of \pm 15 V, then VoutV_{out} is V.
Figure for Question 3
GATE→2026→Analog Electronics→Analog Electronics
Q4
MCQ[2 Marks]
In the following active filter circuit with ideal op-amps, R is 1 \Omega, C is 1 \mu F, and V_{in} has an amplitude of 1 V at 1000 rad/s. The amplitude of VoutV_{out} is V.
Figure for Question 4
GATE→2025→Analog Electronics→Analog Electronics
Q5
MCQ[1 Mark]
For the ideal opamp based circuit shown in the figure, the ratio VI\frac{V}{I} is
Figure for Question 5
GATE→2025→Analog Electronics→Analog Electronics
Q6
MSQ[1 Mark]
The circuits mentioned in the following options are realized using ideal opamp. Among these, the circuit(s) performing non-linear operation on the input signal is/are
GATE→2025→Analog Electronics→Analog Electronics
Q7
NAT[1 Mark]
In the circuit shown, assume that the BJT in the circuit has very high \beta and VBE=0.7V_{BE} = 0.7 V, and the Zener diode has VZ=4.7V_{Z} = 4.7 V. The current through the LED is mA (rounded off to two decimal places).
Figure for Question 7
GATE→2025→Analog Electronics→Analog Electronics
Q8
MCQ[2 Marks]
An chopper amplifier shown in the figure is designed to process a biomedical signal vin(t)v_{in}(t) to generate conditioned output vout(t)...v_{out}(t)...
Figure for Question 8
GATE→2025→Analog Electronics→Analog Electronics
Q9
MCQ[2 Marks]
A 3-bit DAC is implemented using ideal opamp and switches as shown in the figure... For a digital input of 110, the resistance RinR_{in} seen from the reference source and the current I, are
Figure for Question 9
GATE→2024→Analog Electronics→Analog Electronics
Q10
NAT[1 Mark]
Consider the circuit shown in the figure... The corresponding maximum value of resistance RZR_{Z} is k\Omega (rounded off to one decimal place).
Figure for Question 10
GATE→2024→Analog Electronics→Analog Electronics
Q11
NAT[1 Mark]
Figure shows an amplifier using an NMOS transistor... The drain current of the transistor at the operating point is \mu\text{A} (rounded off to nearest integer).
Figure for Question 11
GATE→2024→Analog Electronics→Analog Electronics
Q12
MCQ[2 Marks]
In the figure shown, both the opamps A1A_{1} and A2A_{2} are ideal, except that the opamp A1A_{1} has an offset voltage (Vos)(V_{os}) of 1 mV. For Vin=0V_{in} = 0 V, the values of the output voltages Vout1V_{out1} and Vout2V_{out2}, respectively, are
Figure for Question 12
GATE→2024→Analog Electronics→Analog Electronics
Q13
MCQ[2 Marks]
In the figure shown, R=1R = 1 k\Omega and C=0.1C = 0.1 \mu\text{F}. For a dc gain of -10, the 3 dB cut-off frequency (rounded off to one decimal place) is Hz. Assume the opamp is ideal.
Figure for Question 13
GATE→2024→Analog Electronics→Analog Electronics
Q14
NAT[2 Marks]
In the figure shown, the diode current is given by ID=ISeαVDTI_{D} = I_{S} e^{\frac{\alpha V_{D}}{T}}... The change in the output voltage (Vout)(V_{out}) per Kelvin change in temperature is mV (rounded off to one decimal place).
Figure for Question 14
GATE→2023→Analog Electronics→Analog Electronics
Q15
MCQ[1 Mark]
A light emitting diode (LED) emits light when it is _____ biased. A photodiode provides maximum sensitivity to light when it is _____ biased.
GATE→2023→Analog Electronics→Analog Electronics
Q16
NAT[1 Mark]
The opamp in the circuit shown is ideal, except that it has an input bias current of 1 nA and an input offset voltage of 10 \mu\text{V}. The resulting worst-case output voltage will be \mu\text{V} (rounded off to the nearest integer).
Figure for Question 16
GATE→2023→Analog Electronics→Analog Electronics
Q17
NAT[1 Mark]
The diode in the circuit is ideal... The magnitude of the average current flowing through the resistor R is mA (rounded off to two decimal places).
Figure for Question 17
GATE→2023→Analog Electronics→Analog Electronics
Q18
NAT[2 Marks]
The figure below shows a feedback amplifier constructed using an nMOS transistor... The ratio Vout/VinV_{out}/V_{in} is (rounded off to two decimal places).
Figure for Question 18
GATE→2023→Analog Electronics→Analog Electronics
Q19
NAT[2 Marks]
The opamps in the circuit are ideal. The input signals are VS1=3+0.10sin⁡(300t)V_{S1} = 3 + 0.10\sin(300t) V and VS2=−2+0.11sin⁡(300t)V_{S2} = -2 + 0.11\sin(300t) V. The average value of the voltage V0V_{0} is V (rounded off to two decimal places).
Figure for Question 19
GATE→2023→Analog Electronics→Analog Electronics
Q20
NAT[2 Marks]
In the circuit shown, the input voltage Vin=100V_{in} = 100 mV... At t=20t = 20 ms, the magnitude of the voltage V0V_{0} will be mV (rounded off to the nearest integer).
Figure for Question 20
GATE→2023→Analog Electronics→Analog Electronics
Q21
NAT[2 Marks]
In the circuit shown, assuming an ideal opamp, the value of the output voltage V0=V_{0} = V (rounded off to one decimal place).
Figure for Question 21
GATE→2022→Analog Electronics→Analog Electronics
Q22
NAT[1 Mark]
A Zener diode is used as a 4 V voltage regulator in the circuit shown... the maximum current (in milliamperes) permitted to flow through the load RLR_{L} is (round off to one decimal place).
Figure for Question 22
GATE→2022→Analog Electronics→Analog Electronics
Q23
NAT[1 Mark]
An OPAMP has a gain of 10410^{4}, an input impedance of 10 M\Omega and an output impedance of 100 \Omega... The closed-loop output impedance of the OPAMP (in milliohms) in the circuit is (round off to one decimal place).
GATE→2022→Analog Electronics→Analog Electronics
Q24
MCQ[2 Marks]
A signal Vin(t)V_{in}(t) shown is applied from t=0t=0 ms to t=6t=6 ms to the circuit shown... the open circuit voltage Vout(t)V_{out}(t) at t=5t=5 ms is
Figure for Question 24
GATE→2022→Analog Electronics→Analog Electronics
Q25
MCQ[2 Marks]
A resistor ladder digital-to-analog converter (DAC) receives a digital input... the Thevenin voltage, VthV_{th}, and Thevenin resistance, RthR_{th} as seen at the output node are
Figure for Question 25
GATE→2022→Analog Electronics→Analog Electronics
Q26
MCQ[2 Marks]
In the small signal circuit shown, the enhancement mode n-channel MOSFET is biased in saturation... the small signal impedance looking into the node P is given by
Figure for Question 26
GATE→2022→Analog Electronics→Analog Electronics
Q27
MCQ[2 Marks]
In the small signal circuit shown, the enhancement mode n-channel MOSFET... the small signal gain vo/vdv_{o}/v_{d} is given by
Figure for Question 27
GATE→2022→Analog Electronics→Analog Electronics
Q28
NAT[2 Marks]
The circuit shown is driven by a sinusoidal input voltage... The frequency (in kilohertz) at which the voltage gain is 0 dB is (round off to two decimal places).
Figure for Question 28
GATE→2022→Analog Electronics→Analog Electronics
Q29
NAT[2 Marks]
In the circuit shown, R1=100R_{1} = 100 \Omega and R2=1R_{2} = 1 \Omega... the β\beta (current gain) of the BJT is (round off to two decimal places).
Figure for Question 29
GATE→2022→Analog Electronics→Analog Electronics
Q30
NAT[2 Marks]
In the circuit shown, the switch is initially closed. It is opened at t=0t = 0 s... The time (in milliseconds) at which the output voltage VoutV_{out} becomes LOW is (round off to three decimal places).
Figure for Question 30