Exam Details
| Subject | Electrical Circuits and Electronics | |
| Paper | ||
| Exam / Course | Bachelor Degree Programme (Elective Course: Physics) | |
| Department | School of Sciences (SOS) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
1. Attempt any five parts
How can Zener diode be used as voltage reference
Draw the energy band diagrams for p-type and n-type semiconductors.
Draw the frequency response curve for an RC-coupled amplifier.
Why does V characteristic curve of a practical voltage source deviate from its ideal curve?
What is decimal equivalent of BE16
Write down the truth table for XOR gate and then deduce Boolean expression from the truth table.
On a CRT scale, if the time/div. scale is set to 10 us/div. and the displayed signal covers 2 div. on the horizontal scale, what would the frequency of the signal be
2. Attempt any two parts:
State and prove maximum power transfer theorem.
Design a T-section low pass filter having a cut-off frequency of 5 kHz to operate with a terminal load resistance of 1 kQ.
Draw the structure of junction field effect transistor. Explain the action of controlling the current through the device using gate voltage.
3. Attempt any two parts:
Draw the circuit of two-stage RC-coupled amplifier and explain its working.
Explain the working of a Hartley oscillator with the help of a diagram. What is the role of RFC in this circuit?
Explain half-wave rectification using a circuit with a transformer, a diode and a resistor. What would its ripple frequency be, for 50 Hz input frequency?
4. Attempt any two parts:
What is an op-amp Does its infinite gain imply that the output voltage is infinity for any given input voltage Define CMRR of an op-amp.
Draw the circuit of a 3-input inverting adder and write the expression for its output voltage. How can it be converted into an averaging amplifier?
Write any six characteristics of power amplifier IC LM 380. Draw the circuit of fixed gain audio amplifier using this IC.
5. Attempt any two parts:
Draw the circuit of OR gate using only NAND gates and derive its truth table.
How many flip-flops are needed to design Mod-9 counter Draw the circuit of Mod-9 counter.
List the important components of Cathode Ray Tube (CRT). Explain how the deflection of electron beam takes place in a CRT.
How can Zener diode be used as voltage reference
Draw the energy band diagrams for p-type and n-type semiconductors.
Draw the frequency response curve for an RC-coupled amplifier.
Why does V characteristic curve of a practical voltage source deviate from its ideal curve?
What is decimal equivalent of BE16
Write down the truth table for XOR gate and then deduce Boolean expression from the truth table.
On a CRT scale, if the time/div. scale is set to 10 us/div. and the displayed signal covers 2 div. on the horizontal scale, what would the frequency of the signal be
2. Attempt any two parts:
State and prove maximum power transfer theorem.
Design a T-section low pass filter having a cut-off frequency of 5 kHz to operate with a terminal load resistance of 1 kQ.
Draw the structure of junction field effect transistor. Explain the action of controlling the current through the device using gate voltage.
3. Attempt any two parts:
Draw the circuit of two-stage RC-coupled amplifier and explain its working.
Explain the working of a Hartley oscillator with the help of a diagram. What is the role of RFC in this circuit?
Explain half-wave rectification using a circuit with a transformer, a diode and a resistor. What would its ripple frequency be, for 50 Hz input frequency?
4. Attempt any two parts:
What is an op-amp Does its infinite gain imply that the output voltage is infinity for any given input voltage Define CMRR of an op-amp.
Draw the circuit of a 3-input inverting adder and write the expression for its output voltage. How can it be converted into an averaging amplifier?
Write any six characteristics of power amplifier IC LM 380. Draw the circuit of fixed gain audio amplifier using this IC.
5. Attempt any two parts:
Draw the circuit of OR gate using only NAND gates and derive its truth table.
How many flip-flops are needed to design Mod-9 counter Draw the circuit of Mod-9 counter.
List the important components of Cathode Ray Tube (CRT). Explain how the deflection of electron beam takes place in a CRT.
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
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Subjects
- Astronomy and Astrophysics
- Communication Physics
- Electric & Magnetic Phenomena
- Electrical Circuits and Electronics
- Elementary Mechanics / Ocillations & Waves
- Mathematical Methods in Physics-I/ Mathematical Methods in Physics-II
- Mathematical Methods in Physics-III
- Modern Physics
- Optics
- Physics of Solids
- Thermodynamics & Statistical Mechanics