51. High range resolution is obtained with
52. The input impedance of a short circuited lossless transmission line quarter wave long is
53. A loss-less line length x such that $$\beta {\text{x}} = \frac{\pi }{2}$$ is connected in between a line of characteristic impedance of 100 Ω and a load impedance of 400 Ω. The line so connected should have a characteristic impedance of
54. Inside a hollow conducting sphere
55. If the maximum electron density for E layer in ionosphere is 9 × 106 electrons/cm3, then its critical frequency is
56. For a perfectly matched line the reflection coefficient has value of:
57. The electric field inside a metal is always . . . . . . . .
58. Impedance inversion may be obtained with-
59. Which of the following is correct?
60. Three point charges, Q1 = 30 nC, Q2 = -150 nC, and Q3 = 70 nC, are enclosed by surface S. What net flux crosses S?
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