The pressure coil of a wattmeter should be connected on the supply side of the current coil when
1). Load impedance is high
2). Load impedance is low
3). Supply voltage is low
4). None of the above
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2. What is a device that detects both vertically and horizontally polarized signals simultaneously?
3. The maximum usable range of the usual radar set (on any particular range setting) is determined by
4. The ground wire should not be smaller than No ______ copper.
5. The speed control of universal motor used for sewing machines is by
6. Slip rings are usually made of