an ampere-hour meter
a true watt-hour meter
a watt meter
none of these
a.c. power only
d.c. power only
a.c. as well as d.c. power
d.c. power and a.c. power after rectification
current
potential difference
capacitance
resistance
D.C. current and D.C. voltage
D.C. and A.C. current
A.C. voltage
A.C. current
Wattmeter and power factor meter
Frequency meter and tong tester
Phase sequence meter and energy meter
Ohm meter and megger
