What do digital instruments display?
A
Analog values B
Digital numeric values C
Bar graphs D
Needle deflection
Analysis & Theory
Digital instruments show results as digital numbers.
Which of the following is a digital instrument?
A
Analog multimeter B
Thermocouple C
Digital voltmeter D
Galvanometer
Analysis & Theory
A digital voltmeter displays voltage in digital form.
What component is used to convert analog signals into digital in digital instruments?
A
DAC B
Transformer C
Transistor D
ADC
Analysis & Theory
ADC (Analog to Digital Converter) converts analog input into digital signals.
Which is NOT an advantage of digital instruments?
A
High accuracy B
Easy to read C
Parallax error D
Compact size
Analysis & Theory
Digital instruments do not suffer from parallax error.
Digital instruments require what type of power?
A
None B
AC only C
DC or battery D
Solar
Analysis & Theory
They require external or battery power to function.
Which of the following is most likely found in a digital multimeter?
A
Pointer dial B
Mercury column C
LED/LCD display D
Rotating disk
Analysis & Theory
Digital multimeters display values on LED or LCD screens.
What causes the reading on a digital instrument to be more reliable?
A
Analog scale B
Display calibration C
No mechanical parts D
Precise needle movement
Analysis & Theory
Digital instruments avoid mechanical errors and parallax issues.
Which of the following is NOT a digital instrument?
A
Digital ammeter B
Digital thermometer C
Analog voltmeter D
Digital frequency counter
Analysis & Theory
Analog voltmeters use pointer scales, not digital display.
Which device is typically used in measuring frequency digitally?
A
Multimeter B
Frequency counter C
Voltmeter D
Oscilloscope
Analysis & Theory
Frequency counters measure frequency in digital form.
Why are digital instruments widely used today?
A
They are complex B
They are mechanical C
They give faster and clearer results D
They use mercury
Analysis & Theory
Digital instruments provide fast, clear, and accurate readings.