replacing the rotating disc with new one
drilling two diametrically opposite holes in the disc
reducing the considerable load
increasing the gap between the disc and permanent magnet
0 to 30 amperes (extended scale)
0 to 15 amperes (linear scale)
0 to 10 amperes (non. linear scale)
0 to 5 amperes (extended scale)
Dynamometer type wattmeter
Electrostatic type wattmeter
induction type wattmeter
Commutator type wattmeter
the square of the current in fixed coil
the current in the moving coil
the current in the fixed coil and in the moving coil
the current in the fixed coil
D.C. watt hour
D.C. ampere hour
A.C. and D.C. watt hour
A.C. watt hour