81. Performance of which one of the following diodes is not based on its negative resistance:
82. Magic Tee is a combination of
83. A wave in which neither the electric nor the magnetic component is in the direction of propagation, is known as
84. In gunn diode, GaAs is preferred to Si because it has
85. The degenerate modes in a waveguide are characterized by
86. In rotary phase shifter, rotable section plate is
87. Which of the following is a "hot carrier diode"?
88. A reflex klystron oscillator is a
89. In metal semiconductor contacts, the Schottky effect is the image force induced lowering of the potential energy for charge carrier emission when an electric field is applied. This image force is:
90. The requirement for reliability, long stability, high efficiency and suitability for space environment are met by the use of
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