Electrical Measurements and Instrumentation MCQs (Part-3)

Which device is used to measure electrical resistance?

A Wattmeter
B Ammeter
C Ohmmeter
D Voltmeter

What is the primary function of a transducer?

A Convert energy form
B Measure power
C Store energy
D Measure voltage

Which instrument is used to measure alternating current (AC)?

A Frequency meter
B Oscilloscope
C Voltmeter
D Ammeter

What is measured by a galvanometer?

A Power
B Small current
C Voltage
D Resistance

Which device is used to measure both AC and DC voltage?

A Multimeter
B Oscilloscope
C Frequency meter
D Voltmeter

What is the main purpose of an oscilloscope?

A Measure power
B Measure voltage
C Display signal waveform
D Measure frequency

Which of these is used for high voltage measurements?

A Thermocouple
B Wattmeter
C Ohmmeter
D High voltage probe

What does a frequency meter measure?

A Voltage
B Frequency
C Current
D Power

Which device measures electrical energy consumption?

A Energy meter
B Voltmeter
C Frequency meter
D Ammeter

Which instrument is used to measure small changes in strain?

A Piezoelectric sensor
B Thermocouple
C Pressure gauge
D Strain gauge

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

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

Which instrument measures phase difference between two signals?

A Voltmeter
B Phase meter
C Ammeter
D Wattmeter

What does a piezoelectric sensor measure?

A Vibration
B Temperature
C Strain
D Pressure

What is a potential transformer (PT) used for?

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

Which of the following is used to measure the flow of fluids?

A Thermocouple
B Flow meter
C Strain gauge
D Pressure sensor