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Question Bank

The document contains possible exam questions on characteristics of diodes, clippers, and clampers. It also contains possible exam questions on BJTs, RC coupled amplifiers, and feedback amplifiers. The questions cover topics like diode resistance, clipper and clamper circuits, BJT biasing, small signal analysis, feedback amplifiers, and analog to digital converters.

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thakkannavarnaveen
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62 views3 pages

Question Bank

The document contains possible exam questions on characteristics of diodes, clippers, and clampers. It also contains possible exam questions on BJTs, RC coupled amplifiers, and feedback amplifiers. The questions cover topics like diode resistance, clipper and clamper circuits, BJT biasing, small signal analysis, feedback amplifiers, and analog to digital converters.

Uploaded by

thakkannavarnaveen
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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Question Bank

MODULE 1
Possible Questions on Characteristics of Diode , Clippers and Clampers

1. Explain the static resistance and dynamic resistance of a diode.


2. Draw a double ended clipper circuit and explain its working principle with
transfer characteristics.
3. For the sketch shown fig. below, Vi varies from 0 to 150V, sketch the output
voltage Vo to the same time scale as the input voltage. Assume ideal diode

4. Design a shunt clipping circuit for the transfer characteristic as shown in Fig.1
(b). Assume that a resistance of 1𝐾Ω is connected in series with input
sinusoidal signal and output is taken across 𝑅𝐿 = 10𝐾Ω. Draw the input and
output voltage waveforms.
5. Draw and explain the different positive clamper circuit. Sketch the input and
voltage.
6. Draw and explain the different negative clamper circuit. Sketch the input and
voltage.
7. Write the procedure for analyzing the clamping circuit, determine output
voltage for the network shown in fig. (1.b) Assume f=1000Hz and ideal diode.

Possible Questions on BJT , RC Coupled Amplifier, Feedback Amplifiers

8. Define stability factor and derive an expression for stability factor S in a


voltage divider bias circuit.
9. With a neat block diagram explain the working of a negative feedback
amplifier. How is the overall gain affected in these amplifiers?
10. Determine the voltage gain, input and output impedance with feedback for a
voltage series feedback amplifier having A= -100, Ri=10k 𝛀, Ro=20k𝛀 for a
feedback of i)β=1 and ii)β= -0.5.
11. Explain the voltage divider biasing for for BJT’s using single power supply.
How does RE provide a negative feedback action to stablise the bias current
with necessary supporting mathematical equations.
12. Make use of small signal analysis model of the voltage amplifier to derive
expressions for𝑅𝑖𝑓 𝑎𝑛𝑑 𝑅𝑜𝑓.
13. Make use of small signal analysis model of the current amplifier to derive
expressions for𝑅𝑖𝑓 𝑎𝑛𝑑 𝑅𝑜𝑓.
14. With a neat circuit explain the voltage series , voltage shunt, current series and
current shunt amplifiers .
15. How does negative feedback affect the performances of an inverting amplifier
using opamp? Derive the relevant expressions for Gain, input resistance and
output resistance.
16. Explain the working of a Successive Approximation type of ADC.
17. What is R-2R network type DAC? Explain with relevant expressions.

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