Docstoc

dee questions

Document Sample
dee questions Powered By Docstoc
					                                            1


                                Part B Questions
                              Electronics Circuits II
                                      L4A
1. Draw and explain the circuit of a transistor Schmitt trigger with the help of necessary
    waveforms?
2. Design a transistor Schmitt trigger circuit with UTP=8V, LTP=3V, VCC=10V, β=100,
    IC=1 mA?
3. Design a transistor Schmitt trigger with VCC=10V, β=100, IC=1 mA and ON time=1ms
    and OFF time=2ms?
4. Draw the circuit of fixed bias Monostable multivibrator and explain the working with
    necessary waveforms. (12 marks)?
5. Draw the circuit of self bias Monostable multivibrator and explain the working with
    necessary waveforms. (12 marks)?
6. Design a transistor Monostable multivibrator circuit with VCC=10V, β=100, IC=1 mA and
    frequency of 1 KHZ?
7. Design a transistor Monostable multivibrator circuit with VCC=10V, β=100, IC=1 mA and
    duty cycle=0.75?
8. Design a transistor Monostable multivibrator circuit with VCC=10V, β=100, IC=1 mA and
    ON time=1ms and OFF time=2ms?
9. Explain different triggering methods in Monostable multivibrator?
10. Explain bistable multivibrator?
11. Explain different triggering methods in bistable multivibrator?
12. Design a transistor bistable multivibrator circuit with VCC=10V, β=100, IC=2 mA and
    frequency of 1 KHZ?
13. Design a transistor bistable multivibrator circuit with VCC=10V, β=100, IC=1 mA and
    duty cycle=0.60?
14. Draw and explain the circuit of RC phase shift oscillator?
15. Design an RC phase shift oscillator circuit with a frequency of oscillation of 2KHZ?
16. Draw and explain the circuit of a transistor Colpitt oscillator with the help of necessary
    waveforms?
17. Draw and explain the circuit of a transistor Hartley oscillator with the help of necessary
    waveforms?
18. Design a Colpitt oscillator circuit with a frequency of oscillation of 255KHZ?
19. Design a Hartley oscillator circuit with a frequency of oscillation of 400KHZ?
20. Explain RC phase shift oscillator and derive the frequency of oscillation?
21. Explain Colpitt oscillator and derive the frequency of oscillation?
22. Explain Hartley oscillator and derive the frequency of oscillation?
23. Derive general form of LC oscillatiors?
24. Explain crystal oscillators?
25. Explain Tuned collector oscillators?
26. Explain Wien bridge oscillators?
27. Explain Wien bridge oscillator and derive the frequency of oscillation and gain?
28. Draw and explain Emitter follower circuit?
29. Draw Darlington pair Emitter follower circuit and explain?
30. Explain difference amplifiers?
31. Classify and explain different types of feedback with block diagram?
32. Explain Voltage series feedback with suitable diagram and derive Zi,Zo,Av?
33. Explain Voltage shunt feedback with suitable diagram and derive Zi,Zo,Av?
34. Explain current series feedback with suitable diagram and derive Zi,Zo,Av?
                                             2

35.   Explain current shunt feedback with suitable diagram and derive Zi,Zo,Av?
36.   Draw the typical circuit for Voltage series feedback and explain?
37.   Draw the typical circuit for Voltage shunt feedback and explain?
38.   Draw the typical circuit for current series feedback and explain?
39.   Draw the typical circuit for current shunt feedback and explain?
40.   Explain Single tuned amplifier?
41.   Explain double tuned amplifier?
42.   Explain multi stage amplifiers?
43.   Explain frequency response of Single tuned amplifier?
44.   Explain frequency response of double tuned amplifier?
45.   Explain high frequency circuit of a transistor?
46.   Explain hybrid pi model of a transistor?
47.   Explain miller sweep circuit?
48.   Explain bootstrap sweep circuit?
49.   Explain class A amplifier circuit?
50.   Explain class B amplifier circuit?
51.   Explain class C amplifier circuit?
52.   Explain class B push pull amplifier circuit?
53.   Explain class B push pull complementary symmetry amplifier circuit?
54.   Explain distortion?
55.   Derive the efficiency for class A amplifier circuit?
56.   Derive the efficiency for class B amplifier circuit?
57.   Derive the efficiency for class C amplifier circuit?
                                              3

                                   Part A Questions

1. What are the applications of Schmitt Trigger?
2. Explain the use of commutating capacitors in multivibrator circuits?
3. Which type of base triggering is preferred more, in practical bistable multivibrator circuit?
   Why? Explain.
4. State and explain Barkhausen criteria for oscillators?
5.    Classify multivibrator circuits with block representations?
6.    What are the applications of monostable Multivibrators?
7.    What are the applications of Bistable Multivibrators?
8.    Why commutating capacitors is must in Bistable multivibrator circuits?
9.    What are the types of triggering multivibrator circuits?
10.   Explain LTP&UTP with the help of a neat diagram?
11.   Why commutating capacitors is rarely used in mono stable multivibrator circuits?
12.   What is hysteresis in Schmitt trigger?
13.   State and explain Barkhausen criteria for oscillators?
14.   Classify Oscillators?
15.   Write the general equation for LC oscillators?
16.   Draw the block diagram of LC oscillators?
17.   Explain balanced condition in Wien bridge oscillators?
18.   Explain Tank circuit?
19.   Explain crystals?
20.   Explain how crystal can be operated in series resonance frequency?
21.   Write the equation for parallel resonance frequency?
22.   Explain h parameters in terms of r parameter?
23.   Explain series and parallel resonance circuit?

				
DOCUMENT INFO