electronics-and-communication-engineering-exam-question-papers Related Question Answers

51. For a series resonant circuit at low frequency circuit impedance is __________ and at high frequency circuit impedance is __________ Fill in the blanks respectively





52. The network is





53. A signal with ± 10 V ranged and 1 KHz band width is being digitized using a sample and hold circuit and a 10 bit quantizer. The minimum sampling rate is :





54. The circuit below represents function X(A, B, C, D) as:





55. Whose government is famous for its elaborate municipal administration?





56. In the sixth and seventh centuries A.D., Saivism seems to have replaced Vaishnavism as the imperial religion of Northern India. It counted among its votaries all of the following supreme rulers, except?





57. If the characteristic equation of a closed loop system is s2 + 2s + 2, then the system is :





58. Given digits 2, 2, 3, 3, 3, 4, 4, 4, 4 how many distinct 4 digit numbers greater than 3000 can be formed?





59. Consider circuit with 4 : 16 Demux below: Now:f1 = (2, 6, 11, 12)f2 = (2, 5, 14)= p (2, 3, 4, 5, 9, 13, 14)





60. Re-write as directed They have completed the work. (Turn into passive)?





61. The following circuit can be represented as :




62. The first President of the Indian National Congress was:?





63. Find Y in the circuit below : f1(E, F) = ∑(0, 1, 2, 3) f2(A, B, E, F) = ∑(0, 1, 2, 3, 5, 6, 9) f3(A, B, E, F) = ∏(4, 7, 8, 10, 11, 12, 13, 14, 15)




64. Calculate the stability factor and change in Ic from 25°C to 100°C for, β = 50, RB/RE = 250, ΔICO = 19.9 nA for emitter bias configuration





65. Who was the author of Aithihyamala?





66. In a radar system, the range of R1 is achieved at a frequency f1. Then the range R2 at frequency R2 = 8f1 would be __________ [Neglect effect of 1 on the Beam width.]





67. The passive sentence of People claim to have seen the suspect in several cities.?





68. The logic function f(A, B, C) = m(0, 2, 4, 5, 6) can be represented by :





69. In amplitude modulation, carrier signals A cos ωt has its amplitude A modulated in proportion with message bearing (low frequency) signal m(t). The magnitude of m(t) is chosen to be __________ .





70. For real values of x, the minimum value of the function f(x) exp (x) + exp (- x) is





71. An image uses 512 x 512 picture elements. Each of the picture elements can take any of the 8 distinguishable intensity levels. The maximum entropy in the above image will be





72. A tachometer has a sensitivity of 4 V/1000 rpm. Express the gain constant of the tachometer in the units volts/(rad/sec).





73. Consider the signal x(n) = 1 + sinn + 3 cosn + cos . Then Fourier series coefficients are __________ .





74. A certain system has transfer function a is a parameter. Consider the standard negative unity feedback configuration as shown below. Which of the following statements is true?





75. If a signal f(t) has energy E, the energy of the signal f(2t) is equal to __________ .





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