Thursday, January 6, 2011

VIVA QUESTIONS FOR DESIGN PROJECT LAB (CYCLE I)

1. What is a counter?

2. What are the types of counter?

3. Difference between BCD and Binary counter?

4. Difference between positive and negative edge triggering?

5. What is the use of batch counter?

6. What is the maximum count of a BCD counter?

7. What is a decoder?

8. Construct a BCD to seven segment decoder (using logical gates)?

9. What is the need for BCD to seven segment decoder?

10. What are the types of displays?

11. Compare common anode and cathode LED?

12. Mention the steps in designing a counter?

13. Identify the internal components of IC7490 and IC7447?

14. What are TTL IC’s?

15. What is ADC?

16. What is DAC?

17. Mention the types of ADC?

18. Mention the types of DAC?

19. What is the resolution of DAC?

20. What is the advantage of using R-2R over weighted resistor method?

21. Define conversion time, settling time, monotonocity.

22. Which is the fastest ADC? Why?

23. Give some examples of monolithic ADC and DAC?

24. Write the output expression for a N bit DAC?

25. What is sampling?

26. Define Sampling theorem.

27. What is quantization?

28. What is aliasing?

29. What is the significance of 3½ digits?

30. Explain briefly the operation of dual slope DVM?

31. Mention the value of integrating current?

32. How will you choose the integrating resistor and capacitor?

33. What is the operating frequency?

34. What are the ways of connecting oscillator to ICL 7107?

35. What is the use of test pin in ICL 7107?

36. How will you choose auto zero capacitor?

37. What is auto zero phase?

38. Mention the guide lines for choosing reference voltage in ICL 7107?

39. How will you generate a negative supply from +5V for ICL 7107?

40. What is the calibrator?

41. Mention the components of ICL 7107?

42. Identify the operating voltage, temperature condition for ICL 7107?

43. What is meant by regulation?

44. Define load and line regulation.

45. Mention the IC fixed positive voltage regulation?

46. Mention the IC fixed negative voltage regulation?

47. What is the need for variable regulators?

48. What is the need for step down transformer?

49. Compare iron and air core transformers.

50. Define Transformer Utilization Factor.

51. Define turns ratio.

52. What are the types of rectifier?

53. What is meant by ripple factor?

54. How will you choose a diode based on current rating?

55. What is the need for filter?

56. What are the types of filter?

57. What is the maximum input voltage range for IC 78xx and IC 79xx?

58. What is meant by dropout voltage?

59. What is telemetry?

60. What are the types of telemetry?

61. Mention the standard ranges for current, voltage and pressure telemetry.

62. Mention the transducer available for measurement of temperature?

63. Which temperature transducer has highest sensitivity?

64. Which temperature transducer has highest stability?

65. What is maximum possible temperature range of PT100?

66. Write the calendar equation?

67. Write the equation of resistance for RTD and Thermister?

68. Mention the need and advantage of Instrumentational amplifier?

69. What are the types of V/I converter?

70. What is the gain of instrumentational amplifier?

71. How will you test IC741 for proper working?

72. Mention monolithic instumentaional amplifier?

73. What is servo mechanisms?

74. What is linear regulator?

75. What is switching regulator?

76. What is the difference between buck and boost converter?

77. What are the factors to be considered when designing a regulated voltage supply?

78. Define PIV

79. What is the use of zero comparator in 3½ digit voltmeter?

80. Derive the output voltage for the following digital inputs

a) 1000

b) 0100

c) 0010

d) 0001 in R-2R ladder network.

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