1
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
The block diagram of two types of half wave rectifiers are shown in figure. The transfer characteristics of the rectifiers are also shown within the block GATE EE 2008 Analog Electronics - Operational Amplifier Question 27 English

It is desired to make full wave rectifier using two half wave rectifiers. The resultant circuit will be

A
GATE EE 2008 Analog Electronics - Operational Amplifier Question 27 English Option 1
B
GATE EE 2008 Analog Electronics - Operational Amplifier Question 27 English Option 2
C
GATE EE 2008 Analog Electronics - Operational Amplifier Question 27 English Option 3
D
GATE EE 2008 Analog Electronics - Operational Amplifier Question 27 English Option 4
2
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 28 English
A
$$46\% $$
B
$$55\% $$
C
$$63\% $$
D
$$92\% $$
3
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 29 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 $$t=2.57$$$$\mu \sec .$$
4
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
A relaxation oscillator is made using op-amp as shown in figure. The supply Voltage of the op-amp are $$ \pm 12$$ the voltage waveform at point $$'p'$$ will be GATE EE 2006 Analog Electronics - Operational Amplifier Question 30 English
A
GATE EE 2006 Analog Electronics - Operational Amplifier Question 30 English Option 1
B
GATE EE 2006 Analog Electronics - Operational Amplifier Question 30 English Option 2
C
GATE EE 2006 Analog Electronics - Operational Amplifier Question 30 English Option 3
D
GATE EE 2006 Analog Electronics - Operational Amplifier Question 30 English Option 4
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