Sine wave signals may be generated in a laboratory with an instrument called?

AIIMS Raipur - 2017 (shift-2)

General Knowledge

Easy

Appeared in: AIIMS Raipur - 2017 (shift-2)

Explanation

An oscillator is an electronic circuit or instrument specifically designed to produce a repeating, oscillating electronic signal, such as a sine wave.
It generates these signals autonomously without requiring an external input signal, making it a primary source for waveforms in electronics.
In laboratory and biomedical settings, function generators (a type of oscillator) are used to produce clean sine waves for testing, calibrating, and troubleshooting other electronic equipment.

Option B: Amplitude is a property or measurement of a wave, specifically its maximum displacement or intensity from the equilibrium position. It is not an instrument.
Option C: This is not a standard or recognized term for a piece of test and measurement equipment in electronics or physics.
Option D: A capacitor is a passive electronic component that stores energy in an electric field. It is a building block within circuits.

Visual 1: Diagram - A labeled sine wave showing its key properties like amplitude, wavelength, and period. This helps differentiate the signal itself from the instrument that creates it.
Visual 2: Image - A laboratory function generator (a type of oscillator) with its controls for frequency, amplitude, and waveform selection visible. This shows the student what the actual instrument looks like.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Function of Laboratory Instruments for Signal Generation as background academic context rather than a clinical decision trigger.
Oscillators, often found within function generators, are crucial for testing and calibrating medical electronic devices like ECG machines, patient monitors, and auditory testing equipment to ensure they are functioning accurately.
Understanding basic signal generation is fundamental for biomedical technicians and nurses who work with advanced diagnostic and therapeutic equipment, as it helps in troubleshooting and recognizing equipment malfunction.
What if? If a patient's ECG monitor is showing an erratic waveform even though the patient appears stable, a biomedical technician might use a sine wave from a function generator as a known, stable input to test if the monitor's display and processing circuits are faulty or if the issue is with the patient electrodes.

How to Approach the Question

This is a factual recall question that asks for the name of a specific instrument based on its function.
First, identify the core function described in the stem: 'to generate sine wave signals'.
Next, evaluate each option based on your knowledge of basic electronics and laboratory equipment.
Analyze the term 'Oscillator'. The root word 'oscillate' means to move or swing back and forth at a regular speed, which directly relates to creating a wave.
Consider 'Amplitude'. This is a characteristic or measurement of a wave, not a device.
Evaluate 'Analog finder'. This is not a standard instrument name, making it an unlikely correct answer.

Concept Tested & Keywords

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