Electrical Measurements and Instrumentation MCQs (Part-8)

Which device is used to measure electrical potential difference?

A Ammeter
B Wattmeter
C Voltmeter
D Ohmmeter

What does a galvanometer measure?

A Small current
B Power
C Voltage
D Frequency

Which instrument is used to measure the resistance of a conductor?

A Voltmeter
B Ammeter
C Wattmeter
D Ohmmeter

What does an oscilloscope display?

A Frequency
B Waveform
C Power
D Current

What is the main function of a bridge circuit?

A Measure resistance
B Measure current
C Measure voltage
D Measure power

Which of the following instruments is used to measure alternating current (AC) power?

A Voltmeter
B Ammeter
C Wattmeter
D Frequency meter

What is the function of a current transformer (CT)?

A Step up current
B Step down current
C Measure voltage
D Measure power

What is the primary function of a phase meter?

A Measure frequency
B Measure voltage
C Measure phase difference
D Measure power

Which device is used to measure the electrical energy consumed over time?

A Energy meter
B Wattmeter
C Ammeter
D Voltmeter

What is the function of a potential transformer (PT)?

A Step up current
B Step up voltage
C Measure power
D Step down voltage

Which type of instrument is used to measure very high frequency signals?

A Frequency meter
B Oscilloscope
C Spectrum analyzer
D Voltmeter

What is the purpose of using a potentiometer in a measurement system?

A Measure resistance
B Calibrate voltage
C Measure current
D Measure power

Which of the following instruments measures the current flowing through a circuit?

A Voltmeter
B Wattmeter
C Ammeter
D Multimeter

What does a piezoelectric sensor measure?

A Power
B Strain
C Vibration
D Displacement

What is the main function of a galvanometer?

A Measure current
B Measure voltage
C Measure frequency
D Measure resistance