Consideration in Selecting Voltmeter

Electrical Measurements

This set of Electrical Measurements Question Bank focuses on “Consideration in Selecting Voltmeter”.

1. Input impedance of a voltmeter is ___________
a) high
b) low
c) medium
d) zero

2. Input impedance depends on _________
a) resistance
b) capacitance
c) inductance
d) voltage

3. At high frequencies the capacitive reactance _________
a) is constant
b) increases
c) decreases
d) becomes zero

4. Voltage ranges in a meter are _________
a) 5-10-15
b) 20-50-100
c) 0.5-1-1.5
d) 1-3-10

5. Linear meter with 1% accuracy must have _________
a) 100 divisions
b) 50 divisions
c) 200 divisions
d) 500 divisions
.

6. Decibel covers a small range of values.
a) True
b) False

7. Noise is a function of _________
a) voltage
b) current
c) bandwidth
d) frequency

8. Current can be measured effectively by making use of _________
a) d.c. voltmeter
b) a.c. ammeter
c) d.c. ammeter
d) a.c. voltmeter

9. Average responding voltmeter is cheap and accurate.
a) True
b) False

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