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Demerits of Semiconductor Diode over Vacuum Diode
(i) It can't withstand high reverse voltage
(ii) It can't operate at fairly high temperatures.
Friction of rough surfaces Place two pieces of sandpaper together. Notice the friction that is formed when one is rubbed against the other. Now put some grease among the pieces
Define the term intrinsic stand-off ration in UJT. Ans: Intrinsic Stand-off Ratio: Equivalent circuit of a UJT is demonstrated in fig. (a). Emitter diode forms the junctio
Explain how suppressor grid eliminates effect of secondary emission in pentode Ans: Suppressor grid is placed in between plate and screen grid. It's connected with the cathode
What are coiled roped and woven/knitted optics? Simply woven or braided ropes manufactured along with thin solid core fiber optics, in place of hemp or nylon. Due to the stra
Positive rays are sometimes called as the canal waves. These were found by Goldstein. If the cathode of a discharged tube has holes in it and the pressure of the gas is around 10-3
state and explain pauli''s exclusion principle
Tin: Atomic number 50 Symbol Sn Atomic weight 118.69 Discovery Known since ancient
For an infinite sheet of positive charge, the electric field lines: a) Run parallel to the sheet of charge b) Are perpendicular to the sheet of charge and point in toward
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wave-fronts in front of the source com
How are the ultrasonics deals with sound waves? Ultrasonics, deals along with sound waves which pass a specified point at least 20,000 times per second. As ultrasonic waves vib
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