11. Assume that an 8-volt peak-to-peak signal is applied to the grid
circuit in the manner shown in figure 64 (TM 11-662). The point of
operation on the load line will then vary between points
a.
A and C.
c.
B and E.
b.
A and G.
d.
B and F.
12. Assume that a 12-volt peak-to-peak voltage is applied to the
grid circuit in the manner illustrated in figure 64 of TM 11-662.
The load line shows that when the signal voltage swings 6 volts
positive the plate current increases by 3.6 mA, and when the signal
voltage swings 6 volts negative the plate current decreases by 2.7
mA.
The fact that equal changes in grid voltage cause different
changes in plate current shows that the
a.
tube is defective.
b.
output will be slightly distorted.
c.
control-grid bias is not functioning properly.
d.
interelectrode capacitances will be abnormally high.
13. If the load resistor is changed to 50K, the orientation of the
load line will change.
However, the load line still intersects the
plate voltage axis at 250 volts, but will intersect the plate current
axis at
a.
2 mA.
c.
10 mA.
b.
5 mA.
d.
15 mA.
126
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