1
GATE ECE 2025
MCQ (More than One Correct Answer)
+1
-0
Which of the following statements is/are TRUE with respect to an ideal opamp?
A
It has an infinite input resistance
B
It has an infinite output resistance
C
It has an infinite open-loop differential gain
D
It has an infinite open-loop common-mode gain
2
GATE ECE 2022
MCQ (More than One Correct Answer)
+1
-0

An ideal OPAMP circuit with a sinusoidal input is shown in the figure. The 3 dB frequency is the frequency at which the magnitude of the voltage gain decreases by 3 dB from the maximum value. Which of the options is/are correct?

GATE ECE 2022 Analog Circuits - Operational Amplifier Question 6 English

A
The circuit is a low pass filter.
B
The circuit is a high pass filter.
C
The 3 dB frequency is 1000 rad/s.
D
The 3 dB frequency is $${{1000} \over 3}$$ rad/s.
3
GATE ECE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
For the operational amplifier circuit shown, the output saturation voltages are $$ \pm \,\,15V$$. The upper and lower threshold voltages for the circuit are, respectively. GATE ECE 2017 Set 1 Analog Circuits - Operational Amplifier Question 63 English
A
+5 V and -5V
B
+7 V and -3V
C
+3V and -7V
D
+3V and -3V
4
GATE ECE 2016 Set 1
Numerical
+1
-0
The following signal Vi of peak voltage 8V is applied to the non-inverting terminal of an ideal Opamp. The transistor has VBE = 0.7 V, $$\beta \, = \,100;$$ VLED = 1.5 V, VCC = 10V and -VCC = -10V. GATE ECE 2016 Set 1 Analog Circuits - Operational Amplifier Question 64 English 1 GATE ECE 2016 Set 1 Analog Circuits - Operational Amplifier Question 64 English 2

The number of times the LED glows is ______.

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