state two materials used in making the cathode of thermionic valves
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define each of the following with respect to atomic theory i. atomic number ii. ionization potential
Explain the function of each of the following parts of a cathode-ray tube i. aquadag layer ii. screen
explain thermionic emission as applied to metals
define mutual conductance with respect to field-effect transistors
state any two advantages of FETs over BJTs
define each of the following with respect to dc power supply i. peak inverse voltage ii. ripple factor
state any two merits of a full-wave centre-tapped single-phase rectifier
define the following JFET parameter i. drain-source saturation current, ii. gate-source cutoff (pinch-off) voltage
state any two of bohr’s postulates with respect to the energy levels of an electron