20. The operating potentials of a tube must be adjusted so that
conduction takes place in the proper operating regions of the
characteristic curves. Selecting an operating point for a triode on
the straight portion of the characteristic curves will provide
a.
a change in grid current that is inversely proportional to a
change in plate current.
b.
the correct
cathode
temperature
for
proper
thermionic
emission.
c.
a change in plate current that is proportional to a change in
grid potential.
d.
the smallest change in plate current with a given change in
grid potential.
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