CRO Quiz: Electrical Signals and Basics

What is the purpose of the TIME/DIV switch in combination with the S/Ms control?

What is the function of the MAGN xn control?

What is the purpose of the CAL knob?

What is the purpose of the NORM/TV switch?

What is the purpose of the INT/EXT switch?

What is the purpose of the experiment described in the Engineering Physics Lab Manual?

What is the primary function of a Cathode Ray Oscilloscope (CRO)?

What does the X-axis represent on a Cathode Ray Oscilloscope?

What is the purpose of the FOCUS knob on a Cathode Ray Oscilloscope?

What happens to the DC component of the signal when the AC/DC switch is in the AC position?

What is the function of the horizontal deflection plates in a Cathode Ray Oscilloscope?

What is the range of the AMP/DIV knob on a Cathode Ray Oscilloscope?

Cathode Ray Oscilloscope (CRO)

A CRO is an instrument that provides a visual representation of electrical signals, displaying them on a screen with X-axis representing time and Y-axis representing amplitude.
The cathode ray tube is the heart of a CRO, generating a narrow electron beam that falls on a fluorescent screen.
The electron beam is deflected horizontally and vertically by horizontal and vertical deflection plates respectively.

Controls and Functions

TIME BASE and HORIZONTAL DEFLECTION X-POSITION: controls horizontal shifting of the trace
LEVEL: helps signal remain still
S/Ms: selects time coefficients with TIME/DIV switch
MAGN xn: allows magnification of horizontal deflection by a factor of n
X A: determines horizontal deflection based on input signal to channel A
CAL Knob: turns to CAL position for taking readings
INT/EXT: allows external triggering signal for timer-base through EXT socket
NORM/TV: selects triggering type (normal or TV line/frame synchronization)

Apparatus and Experiment

Apparatus: CRO, Function generator, and probes
Experiment: measures frequency of a signal and amplitude of a given wave
Measure current, frequency, and inductance using the apparatus

Resonance Frequency and Series Resonance

Measure resonance frequency (fr) when current reaches maximum value (Imax)
Evaluate inductance (L) in henry using the equation
Record values of R, C, and fr in a table for series resonance

Power and Output

Calculate power in each trial and find the maximum power point
Note the corresponding current and output power

This quiz covers the fundamentals of cathode ray oscilloscopes (CRO), their functionality, and their role in studying electrical signals. Learn about the graphical representation of electrical signals and how CROs display voltage variations. Test your knowledge of CROs and their applications in electronics.