Electrical Measurements and Instrumentation MCQs (Part-11)

What does calibration ensure in electrical measurement systems?

A Accuracy
B Sensitivity
C Voltage
D Power

What type of error occurs due to instrument wear or drift over time?

A Systematic error
B Instrumental error
C Random error
D Gross error

Which of the following reduces errors in measurements?

A Higher resistance
B Regular calibration
C Frequent measurements
D Large voltage

What does dynamic characteristic of an instrument refer to?

A Response to changes
B Maximum voltage
C Accuracy over time
D Sensitivity

What is a primary source of random errors in measurements?

A Instrument drift
B Human mistakes
C Environmental changes
D Statistical fluctuations

What does an error analysis process help with?

A Identifying signal patterns
B Reducing data errors
C Enhancing instrument performance
D Identifying the type of error

What is an example of a systematic error?

A Zero drift
B Temperature fluctuations
C Random noise
D Human mistake

Which of the following is a dynamic characteristic of a measuring instrument?

A Resolution
B Linearity
C Sensitivity
D Speed of response

How can human error in measurements be minimized?

A Using higher voltage
B Training and standard procedures
C Increasing signal strength
D Using smaller instruments

What does precision in measurements refer to?

A Closeness to true value
B Consistency of results
C Response time
D Accuracy over time

What is the function of error correction in measurement systems?

A Increase signal strength
B Reduce environmental impact
C Adjust measurements to true values
D Stabilize power supply

Which of the following is true about precision instruments?

A They always provide accurate results
B They provide consistent results
C They measure large currents
D They work in extreme conditions

What is the impact of noise on measurements?

A Reduces accuracy
B Increases precision
C Improves reliability
D Does not affect measurements

What type of error can be minimized by using higher quality instruments?

A Systematic error
B Random error
C Environmental error
D Human error

What does the linearity of a measurement system refer to?

A Its response time
B Its ability to measure small signals
C The accuracy of its output over a range of values
D Its resistance to noise