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Measuring Instruments in Electronics

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Questions and Answers

What is the operation of a digital ohmmeter based on?

Measuring the inductance by applying a known frequency and measuring the resulting impedance

Measuring the voltage drop across a resistor when a known amount of current flows through it (correct)

Measuring the capacitance by applying a known current and measuring the resulting voltage

Measuring the resistance by applying a known voltage and measuring the resulting current

What is a key feature of digital multimeters?

Employing a display to indicate the value (correct)

Manual ranging only

Measuring resistance by varying input voltage

Having fixed input resistance regardless of range setting

How does an oscilloscope connect in a circuit?

Across the power supply terminals

In parallel with the power supply

In series with the circuit component being analyzed

In parallel with the circuit component being analyzed (correct)

What do digital multimeters exhibit regardless of range setting?

The same amount of input resistance Signup and view all the answers

What is the best way to troubleshoot circuits?

Using an oscilloscope Signup and view all the answers

What does the voltage section of an oscilloscope measure?

Voltage during a particular time period Signup and view all the answers

What does the time base of an oscilloscope measure?

Time during which voltage is measured Signup and view all the answers

Which control on an oscilloscope is used to adjust the vertical position of the waveform?

$Ch 1—Both—Ch 2$ Signup and view all the answers

What does the display on an oscilloscope represent?

The product of voltage and time Signup and view all the answers

What is used to test semiconductor devices using a digital multimeter?

Special range with enough output voltage to overcome forward voltage drop of the device Signup and view all the answers

What can be downloaded into a computer for analysis from an oscilloscope?

An image of the waveform Signup and view all the answers

What should be connected to the ungrounded circuit conductor when using a grounded probe on an oscilloscope?

The grounded probe of the oscilloscope Signup and view all the answers

Study Notes

Digital Ohmmeter and Multimeter

A digital ohmmeter's operation is based on the conversion of a resistance measurement into a digital display.
A key feature of digital multimeters is their ability to provide accurate measurements over a wide range of values.

Oscilloscope Measurement and Connection

An oscilloscope connects in a circuit using a probe, which is usually a voltage-measuring device.
The voltage section of an oscilloscope measures the amplitude of the waveform.
The time base of an oscilloscope measures the time duration of the waveform.

Oscilloscope Controls and Display

The vertical position of the waveform on an oscilloscope is adjusted using the vertical position control.
The display on an oscilloscope represents the waveform of the measured signal.

Troubleshooting and Semiconductor Testing

The best way to troubleshoot circuits is by first understanding the circuit's operation and then using an oscilloscope to measure the voltage at different points.
A digital multimeter's diode test function is used to test semiconductor devices.

Data Analysis and Safety Precautions

Oscilloscope waveforms can be downloaded into a computer for further analysis.
When using a grounded probe on an oscilloscope, the probe should be connected to the ungrounded circuit conductor to ensure safety.

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Description

Test your knowledge of measuring instruments in electronics with this quiz based on the content from 'ELECTRONICS for ELECTRICIANS' by Stephen L. Herman. Learn about the operation of digital multimeters, measuring voltages and resistance, determining current flow, and understanding the operation of an oscilloscope.