Explain with the help of circuit diagram the working of linear voltage regulator using bipolar junction transistor as series pass element. State its advantages over shunt regulator using zener diode.

Design a first order active band pass filter using op-amps to pass the signal in the frequency range of 1 kHz to 10 kHz with voltage gain of 10.

Design and draw the circuit of an inverting Schmitt trigger using op-amp with hysteresis of 40% of ±V_SAT-

What is slew rate of an op-amp? What is its effect on the performance of the op- amp? What is the minimum value of slew rate for reproducing a triangular wave of 100 kHz with ± 10 V amplitude at the output?

Design and draw the circuit using op amps to solve the following simultaneous equations:

2x + 3y = 13

-x + y = 1

Obtain the expressions for the individual gains of the 4 input channels shown in the following circuit, and thereby write down the expression for V_out.

Explain the construction and operation of Impact Ionization Avalanche TransitTime (IMPATT) diode used for microwave generation.

Explain the mechanical equivalences of L-C-R components of an oscillating crystal. A crystal has C = 0.05 pF, L = 1 H and R= 1 kΩ. Calculate its series and parallel resonant frequencies.

Draw the lead-lag network of Wien bridge oscillator and obtain the expression for its oscillation frequency

In double ended input, double ended output configuration of a differential amplifier, the collector resistors R_C1 R_C2= 51kΩ, emitter resistor R_E = 47 ΚΩ and supply voltage is ± 10V. Calculate the dc collector voltage and collector current in the circuit. For the matched pair of n-p-n transistors with ẞ = 100, calculate the common mode gain of the circuit. What is the advantage of using a constant current source in the emitter circuit of the differential amplifier?

For a common emitter transistor configuration if β = 120, I_E = 5 mA, r_o=∞ and R₁=2kΩ, calculate Zi, AV and Ai.

What are the different pumping methods used in Laser diodes to achieve population inversion? Differentiate between LED and Laser diodes

Draw the circuit diagram of CMOS inverter circuit and explain its working with the help of truth table

With the help of circuit diagram explain the use of UJT as a diode pump stair case generator.

Differentiate between construction and operation of E and D mode of MOSFET.

Explain the construction and working of varactor diode. Write its two applications.

What do you understand by the term reluctance? Obtain an expression for reluctance in a magnetic circuit made of an iron ring magnetised by a current flowing through a coil wound closely over it.

An infinite long wire carries a current 1 A. The wire is bent so as to have a semicircular shape around the origin with radius 1 cm as shown in the Figure below. Calculate the magnetic field at the origin O and determine the direction of the field with respect to the plane of the paper.

Obtain an expression for the dipole moment of magnetic dipole arising due to atomic current in terms of the angular momentum of electron in the atom. Also explain the terms gyro-magnetic ratio and Lande g-factor.

Calculate the magnetic vector potential due to an infinite straight current carrying wire at a point located at distance r along a direction perpendicular to the wire. The current I in the wire is flowing in the x-direction.