Which of the following arethe advantages of a balancedbridge vacuum tube voltmeterin comparison with aconventional VTVM?1. Higher input impedance2. Meter zero has lesstendency to shift3. Effects of changes due tovariation of valuecharacteristics are minimized.4. Power supply fluctuationshave a smaller effect on themeasuring circuit. Select thecorrect answer using thecodes given below: Codes

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Which of the following arethe advantages of a balancedbridge vacuum tube voltmeterin comparison with aconventional VTVM?1. Higher input impedance2. Meter zero has lesstendency to shift3. Effects of changes due tovariation of valuecharacteristics are minimized.4. Power supply fluctuationshave a smaller effect on themeasuring circuit. Select thecorrect answer using thecodes given below: Codes