The Meter at Work |
Common terms and phrases
1.0 milliampere a-c and d-c a-c circuits accuracy air gap alternating current ammeter ampere APPLICATIONS OF METERS arrangement basic calibrated cause CHARACTERISTICS OF METERS charges circuit resistance COMPONENTS OF METERS condenser conductors connected copper-oxide rectifier current coil current flow current meter cycles d-c current d-c meters d-c resistance damping device direct current direction dynamometer type electrical meter ELECTRODYNAMOMETER electromagnetic electrostatic meter employed eter frequency full scale full-scale deflection function heater indication instrument iron lines of force load magnetic field magnetic lines measuring ment meter coil meter is shown meter resistance millivolts movement moving coil moving-coil meter MOVING-IRON METERS moving-vane multiplier mutual conductance Ohm's law ohmmeter ohms operation overload percent permanent magnet pivots plunger pointer potential coil PRACTICAL APPLICATION range reading repel resistor result shown in Fig shunt thermal meter thermocouple tion tube turning force type of meter voltage drop voltmeter volts wattmeter zero