Page 866 - Basic Electrical Engineering
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The reading of the meter corresponding to 136 revolutions = × 1 kWh =
0.113 kWh.
Example 11.10 A moving-coil-type instrument has an internal resistance of
25 Ohms. The instrument gives full scale deflection when a current of 100
mA flows through it. The same instrument is to be used as an ammeter of
range 0–30 A and as a voltmeter of range 0–300 V. Show how this can be
done.
Solution:
The connection of a multiplier, i.e., a high resistance in series with the
instrument is required to use it as a voltmeter. For using the instrument as an
ammeter of higher range, a shunt resistance is to be connected in parallel as
shown.
Figure 11.35
From Fig. 11.35 (a),
