railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Digital Voltmeters Sensitivity of DVM
Three D.C. voltmeters are connected in series across a 120 V D.C. supply. The voltmeter is specified as follows:
Voltmeter A: 100 V, 5 mA
Voltmeter B: 100 V, 250 Ohm/Volt
Voltmeter C: 10 mA, 15,000 Ω
The voltages read by meters A, B, C are respectively
1
60, 30 and 30 Volts
2
40, 50 and 30 Volts
3
40, 40 and 40 Volts
4
30, 60 and 30 Volts