1
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
A general filter circuit is shown in figure GATE EE 2008 Analog Electronics - Operational Amplifier Question 29 English

If $${R_1} = {R_2} = {R_A}$$ and $${R_3} = {R_4} = {R_B},$$ the circuit acts as a

A
All pass filter
B
Band pass
C
High pass filter
D
Low pass
2
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
A general filter circuit is shown in figure GATE EE 2008 Analog Electronics - Operational Amplifier Question 28 English 1

The output of the filter in above is given to the circuit shown in figure The gain $${V_S}$$ frequency characteristic of the $$0/p$$ $$\left( {{V_0}} \right)$$ will be

GATE EE 2008 Analog Electronics - Operational Amplifier Question 28 English 2
A
GATE EE 2008 Analog Electronics - Operational Amplifier Question 28 English Option 1
B
GATE EE 2008 Analog Electronics - Operational Amplifier Question 28 English Option 2
C
GATE EE 2008 Analog Electronics - Operational Amplifier Question 28 English Option 3
D
GATE EE 2008 Analog Electronics - Operational Amplifier Question 28 English Option 4
3
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
The input signal $${V_{in}}$$ shown in the figure is a $$1$$ $$kHz$$ square wave voltage that alternates between $$+7V$$ and $$-7V$$ with a $$50\% $$ duty cycle. Both transistors have the same current gain, which is large. The circuit delivers power to the load resistor $${R_L}.$$ What is the efficiency of this circuit for the given input? Choose the closest answer. GATE EE 2007 Analog Electronics - Operational Amplifier Question 31 English
A
$$46\% $$
B
$$55\% $$
C
$$63\% $$
D
$$92\% $$
4
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
The switch $$'S'$$ is the circuit of the figure is initially closed. It is opened at time $$t=0.$$ You may neglect the zener diode forward voltage drops. What is the behavior of $${V_{OUT}}$$ for $$t > 0$$ GATE EE 2007 Analog Electronics - Operational Amplifier Question 32 English
A
It makes a transition from $$ - 5V$$ to $$ + 5V$$ at $$t=12.98$$$$\mu \sec .$$
B
It makes a transition from $$ - 5V$$ to $$ + 5V$$ at $$t=2.57$$$$\mu \sec .$$
C
It makes a transition from $$ + 5V$$ to $$ - 5V$$ at $$t=12.98$$$$\mu \sec .$$
D
It makes a transition from $$ + 5V$$ to $$ - 5V$$ at $$t=2.57$$$$\mu \sec .$$
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