Digital Multimeter

This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Digital Multimeter”.

1. Digital multimeter is used for _________
a) measuring a.c. and d.c. current, voltage and resistance
b) measuring a.c. current and voltage
c) measuring d.c. current and resistance
d) measuring a.c. voltage and resistance

2. Current is converted to voltage __________
a) through a voltmeter
b) through a resistance
c) through an ammeter
d) through a galvanometer

3. For resistance measurement, meter contains _________
a) high current source
b) medium current source
c) low current source
d) low voltage source

4. Quantities are digitised using _________
a) D/A converter
b) oscillator
c) amplifier
d) A/D converter

5. Analog mulimeters require power supply.
a) True
b) False

6. Output of a digital multimeter is _________
a) mechanical
b) optical
c) electrical
d) analog

7. Basic building blocks of digital multimeter are _________
a) oscillator, amplifier
b) diode, op amp
c) rectifier, schmitt trigger
d) A/D, attenuator, counter

8. Resistance is measured using _________
a) constant current source
b) constant voltage source
c) variable current source
d) variable voltage source

9. A.C. voltages are measured using _________
a) oscillators and op amps
b) rectifiers and filters
c) resistor and capacitor
d) inductor and resistor

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