Physics Measurement Quiz
3rd Grade
•5 Qs
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Physics Measurement Quiz
Quiz
•
Physics
•
3rd Grade
•
Medium
Tamilselvi S
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What instrument is used to measure the power on lines?
wattmeter
voltmeter
thermometer
ammeter
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is impedance measured on lines?
Measuring the length of the line
Using an impedance meter or impedance analyzer
Guessing based on the color of the line
Using a thermometer
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate reflection losses?
Reflection Loss (dB) = -5 * log10(Reflection Coefficient)
Reflection Loss (dB) = -10 * log10(Reflection Coefficient)
Reflection Loss (dB) = -20 * log10(Reflection Coefficient)
Reflection Loss (dB) = 10 * log10(Reflection Coefficient)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is VSWR measured?
By counting the number of waves
Guessing based on the signal strength
Using a VSWR meter or network analyzer
Using a ruler and measuring tape
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate wavelength?
wavelength = frequency / speed of light
wavelength = speed of light * frequency
wavelength = speed of light / frequency
wavelength = speed of light - frequency
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