railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Digital Voltmeters
In a digital voltmeter, during start of conversion, zero indication is displayed and is called auto zeroing. This is achieved by
1
Using a positive reference voltage
2
Using a negative reference voltage
3
Properly charging the differentiator circuit capacitance to ground
4
Properly discharging the integrator circuit capacitance to ground