View Full Version : Electronics (920) Semester: Spring, 2012 Level: BCS solution

07-27-2012, 10:51 PM
Course: Electronics (920) Semester: Spring, 2012
Level: BCS Total Marks: 100


(Units: 1–5)

Note: Attempt all questions. All questions carry equal marks.

Q. 1 a) How does a series and parallel circuit works. Describe a Wheatstone bridge. (10)
b) Calculate the resistance of a copper wire 1m long and 0.5mm in diameter. Repeat for a similar-sized nichrome wire. (10)

Q. 2 a) Calculate the Root Mean Square Value (rms value) and Power factor of Alternating current. (10)
b) Differentiate between a capacitive reactance and inductive reactance. Give its significant features. (10)

Q. 3 a) Calculate Vo/Vi in a RL Filter circuit. Also calculate the ratio for RC Filter circuit. (10)
b) Calculate the Transient current in RL series Circuit. (10)

Q. 4 a) State and explain semiconductors energy band theory. (10)
b) Discuss Semiconductor diodes on the basis of PN junctions. (10)

Q. 5 a) Explain the working of Zener diode and light emitting diode. (10)
b) What is reverse recovery time? (10)


(Units: 6–9) Total Marks: 100

Note: Attempt all questions. All questions carry equal marks.

Q. 1 a) What is load line analysis? (10)
b) Discuss in detail Half Wave and Full Wave Rectification. (10)

Q. 2 a) Explain Emitter-stabilized bias circuit. (10)
b) What is BJT small signal analysis? (10)

Q. 3 a) Discuss in detail about series/parallel and series-parallel configurations. (10)
b) What are the descriptions for AND and OR gates? (10)

Q. 4 a) How do a clipper and clamper work? (10)
b) Give a description of BJT transistor Modeling. (10)

Q. 5 a) Discuss basic operation amplifiers and their working. (10)
b) What are Integrator-Differentiator circuits? (10)

Electronics (920)
Recommended Books: Basic Electronics for Scientists by James J. Brophy

Course Outlines:
Unit No. 1 Direct current Circuits
a) Joules’ Law
b) Circuit Analysis
c) Kirchhoff’s Rules
d) Wheat Stone Bridge

Unit No. 2 Alternating Currents–I
Sinusoidal signals, Frequency, Amplitude and Phase, RMS, Value, Power Factor

Unit No. 3 Alternating Currents–II
(a) Capacitive Reactance
(b) Inductive Reactance
(c) RL Filter
(d) RC Filter
(e) Differentiating and Integrating Factor
(f) Transient Currents

Unit No. 4 Alternating Currents–I, Semiconductor Materials
(a) Semiconductor Diode
(b) Resistance Levels
(c) Diode Equivalent Circuits

Unit No. 5 Alternating Currents–II
(a) Transition and Diffusion Capacitance
(b) Reverse Recovery Time
(c) Zener Diode
(d) Light Emitting Diode

Unit No. 6 Diode Applications–I
(a) Load Line Analysis
(b) Series/parallel and Series-Parallel Configurations
(c) AND/OR Gates

Unit No.7 Diode Applications–II
(a) Half Wave and Full Wave Rectifier
(b) Clippers
(c) Clampers
(d) Voltage Multiplier Circuits bipolar Junction

Unit No. 8 Disaster Recovery and System Configuration
(a) Transistor Construction
(b) Transistor Operation
(c) Different Configuration
(d) Transistor Amplifying Action
(e) Limits of Operation
(f) DC Biasing
(g) Fixed Bias Circuit
(h) Emitter Stabilized Bias Circuit
(i) Voltage Divider Bias
(j) Bjt Transistor Modeling
(k) Bjt Small Signal Analysis

Unit No. 9 Operational Amplifier
(a) Differential and Common Mode Operation
(b) Op-Amp Basic
(c) Op-Amp Application