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103A-CTxxx-ISA-EECEL # WYK # Electrical and Computer Engineering Laboratory - Wykład

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Unlike the ideal

voltmeter, the actual voltmeter:

allows for correct

voltage measurement of source with a high internal resistance

has internal

resistance that is

not infinitely large

allows for voltage

measurement without loading effect

has infinitely large

internal resistance

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Draw the load characteristic V_out= f(R_L) (output voltage V_out vs. load resistance R_L) of a stabilized

DC power supply unit with the parameters as follows:

E = 6 V

I_limit

= 150 mA

To do this, download the file, draw the characteristics on it (e.g. using Paint) and upload the file back.

https://leon.pw.edu.pl/pluginfile.php/121876/question/questiontext/125928/11/889206/coordinate%20system.png

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Class

index of an analogue measurement instrument means that:

relative error value is equal

or higher than the class index

absolute error is

constant

absolute error value could be derived from the class index and the readout value

relative error is

constant and equal to the class index

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The four terminals in the stabilized power supply are used due to:

increasing the reliability of supplying power to the load

connection of the load with the power supply voltage comparator

compensation for voltage drops on the cables supplying current to the load

power measurement on the load according to the formula P = VI

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Make the correct interpretation of waveforms picture for the following settings of the oscilloscope:

: Cx = 1ms/div,

_1,2

= 2V/div, δCx =

δCy = 3%

the sine-wave signal has

the amplitude of 4 V

the square-wave signal

has the amplitude of 6 V

the sine-wave signal has

the period of 9 ms

period of the square-wave signal can be measured with inaccuracy better than 5.5%

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The number of figures of the digital multimeter display tells us about:

instrument resolution at selected range

measuring ranges of the instrument

accuracy of the measuring instrument

measurement precision

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What is

the result of current measuremnt

written with the correct number of

significant figures if: V = 8.807 ± 0.003 V, R= 3.8 ± 0.2 kΩ

The results of voltage Vx measurement with the use of two voltmeters V₁ and V₂ are equal: V₁ = 10.5 ± 5% V; V₂ = 11.5 V.

The voltmeter V₂

was set to the measurement range of 30

V and it has the class factor = 2.

Based on the measurement results and errors evaluation justify if the results could

represent the same measured quantity?

Give the answer as a number only!!!

Insert 1 if true

insert 0 if false

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The results of voltage Vx measurement with the use of two voltmeters V₁ and V₂ are equal: V₁ = 10.5 ± 5% V; V₂ = 11.5 V.

The voltmeter V₂

was set to the measurement range of 30

V and it has the class factor = 2.

Absolute limiting error of V₁ is:

View this question

The results of voltage Vx measurement with the use of two voltmeters V₁ and V₂ are equal: V₁ = 10.5 ± 5% V; V₂ = 11.5 V.

The voltmeter V₂

was set to the measurement range of 30

V and it has the class factor = 2.

Absolute limiting error of V₂ is:

View this question

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