Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Write the answer of the following (Any seven question
only):
Which of these are incorrect about Darlington amplifier?
What is a cascade amplifier?
What is the output of a class B amplifier for sinusoidal input?
In a class B amplifier, it is found that DC power is 25W, find the ac power.
In an oscillator if phase of feedback is same as that of oscillation waveform then feedback is called
For a MOSFET, the pinch-off voltage is -3V. Gate to source voltage is 20V. W/L ratio is 5. Process transconductance parameter is 40$ \mu A/V^2 $. Find drain to source current in saturation.
For a MOSFET, the pinch-off voltage is -3V. Gate to source voltage is 20V. W/L ratio is 5. Process transconductance parameter is 40$ \mu A/V^2 $. Find drain to source current in saturation.
The hybrid $ \pi $ model is used for
Which oscillator is characterized by a split capacitor in its tank circuit?
The gate voltage in a JFET at which drain current becomes zero is called
Q.2 Solve this question :
Explain construction and working of Enhancement and Depletion type MOSFET.
Q.3 Solve this question :
What is power amplifier. Explain Transformer coupled Class-A amplifier.
Q.4 Solve this question :
Barkhausen criteria play an important role while designing Oscillator justify. Explain Hartley and RC phase shift Oscillator.
Q.5 Solve this question :
Explain the effect of voltage series and voltage shunt feedback on gain & impedance of amplifier.
Q.6 Solve this question :
The BJT is connected as a CE amplifier. Determine $ Z_i $, $ Z_0 $, $ A_v $, $ A_i $ hybrid model.
Q.7 Solve this question :
Describe current mirror circuit in BJT. What are the condition to design current mirror circuit. Obtain the expression for current transfer ratio.
Q.8 Solve this question :
Derive the expression for voltage gain and current gain and B.W of multistage amplifier.
Q.9 Solve this question :
In brief explain the working of voltage series and current series circuit. Explain the same in case of BJT.
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Write the answer of the following (Any seven question
only):
Which of these are incorrect about Darlington amplifier?
What is a cascade amplifier?
What is the output of a class B amplifier for sinusoidal input?
In a class B amplifier, it is found that DC power is 25W, find the ac power.
In an oscillator if phase of feedback is same as that of oscillation waveform then feedback is called
For a MOSFET, the pinch-off voltage is -3V. Gate to source voltage is 20V. W/L ratio is 5. Process transconductance parameter is 40$ \mu A/V^2 $. Find drain to source current in saturation.
For a MOSFET, the pinch-off voltage is -3V. Gate to source voltage is 20V. W/L ratio is 5. Process transconductance parameter is 40$ \mu A/V^2 $. Find drain to source current in saturation.
The hybrid $ \pi $ model is used for
Which oscillator is characterized by a split capacitor in its tank circuit?
The gate voltage in a JFET at which drain current becomes zero is called
Q.2 Solve this question :
Explain construction and working of Enhancement and Depletion type MOSFET.
Q.3 Solve this question :
What is power amplifier. Explain Transformer coupled Class-A amplifier.
Q.4 Solve this question :
Barkhausen criteria play an important role while designing Oscillator justify. Explain Hartley and RC phase shift Oscillator.
Q.5 Solve this question :
Explain the effect of voltage series and voltage shunt feedback on gain & impedance of amplifier.
Q.6 Solve this question :
The BJT is connected as a CE amplifier. Determine $ Z_i $, $ Z_0 $, $ A_v $, $ A_i $ hybrid model.
Q.7 Solve this question :
Describe current mirror circuit in BJT. What are the condition to design current mirror circuit. Obtain the expression for current transfer ratio.
Q.8 Solve this question :
Derive the expression for voltage gain and current gain and B.W of multistage amplifier.
Q.9 Solve this question :
In brief explain the working of voltage series and current series circuit. Explain the same in case of BJT.