1-53
until the area between the poles was reduced enough to make the two forces equal. The scale is calibrated
to indicate the correct frequency.
If the frequency is constant and the voltage is changed, the currents in the two coils-and therefore the
opposing forces-change by the same amount. Thus, the indication of the instrument is not affected by a
change in voltage.
Q64. What are two types of frequency meters?
Q65. What type of meter is shown and what is the value of the quantity being measured for each meter in
figure1-49?
Figure 1-49.—Meter recognition.
Q66. What meter reading is shown on each multimeter in each part of figure 1-50?
Q67. Which part of figure1-50 shows the switch positions the multimeter should be left in when the meter
is secured?
