Micro Electronics

41. The amplifier CMRR of μA 741 op-amplifier is

  1. 60 dB
  2. 70 dB
  3. 80 dB
  4. 90 dB

Correct answer: (B)
70 dB

42. The charge-coupled device (CCD) is a unique and versatile semiconductor structure invented in 1969 by

  1. W.S Boyle and G.E Smith
  2. W.F Davis and R.C Huntington
  3. D. Cave and W. Blood Jr.
  4. H.H Strellrecht and C.S. Meyer

Correct answer: (A)
W.S Boyle and G.E Smith

43. The gain reduction in operational amplifier is known as

  1. Roll-off
  2. Back-off
  3. Gain-off
  4. Attenuation

Correct answer: (A)
Roll-off

44. The integrated circuit was invented at Texas instrument in 1958 by

  1. Jonathan Kurtz
  2. James Faug
  3. Jack Kilby
  4. Harold Lanche

Correct answer: (C)
Jack Kilby

45. The intel i486 32-bit microprocessor incorporates __________ transistors on a single chip.

  1. 1 million
  2. 100 thousand
  3. 2 million
  4. 200 thousand

Correct answer: (A)
1 million

46. The letter prefix LM identifies which of the following manufacturers?

  1. National semiconductor corporation
  2. Texas instrument
  3. Motorola
  4. Signetics

Correct answer: (A)
National semiconductor corporation

47. The maximum rate that an output voltage of an op-amp can change

  1. Slew rate
  2. CMRR
  3. Input offset voltage
  4. Tail current

Correct answer: (A)
Slew rate

48. The op-amp comparator circuit uses

  1. Negative feedback
  2. A resistor
  3. Positive feedback
  4. No feedback

Correct answer: (D)
No feedback

49. The package suffix code for ceramic dual-in-line is

  1. J
  2. D
  3. N
  4. P

Correct answer: (A)
J

50. The rate of gain reduction in operational amplifers

  1. 5 db per decade (-5dbidecade)
  2. 6 db per decade (-6dbidecade)
  3. 10 db per decade (-10dbidecade)
  4. 20 db per decade (-20db/decade)

Correct answer: (D)
20 db per decade (-20db/decade)

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