haitham999
Newbie level 2
please , can anyone help me to answer these questions :
1- state the principle of digital voltmeter.
2- define the sensitivity of a moving coil meter.
3- explain the design of three phase wattmeter and give the reactive power measurement in 3 phase circuits.
4- explain the function of three phase wattmeter and energy meter.
5- sketch the circuit and waveforms for AC voltmeter using a PMMC instrument and half wave rectifer. explain the circuit operation.
1- state the principle of digital voltmeter.
2- define the sensitivity of a moving coil meter.
3- explain the design of three phase wattmeter and give the reactive power measurement in 3 phase circuits.
4- explain the function of three phase wattmeter and energy meter.
5- sketch the circuit and waveforms for AC voltmeter using a PMMC instrument and half wave rectifer. explain the circuit operation.