Quiz on Internal Impedance of Instruments
Authored by Neel Adwani
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University
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the internal resistance of an ideal voltmeter?
Infinite
High
Low
Zero
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a real voltmeter represented in an equivalent circuit?
As an ideal meter with zero resistance
As an ideal meter with internal resistance
As a capacitor
As an inductor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be the internal resistance of a good ammeter?
Low
Infinite
Zero
High
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the output voltage of a real voltage source when a load is connected?
It remains the same
It increases
It becomes zero
It decreases
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which instrument is used to measure the internal resistance of an analog ammeter?
Resistance substitution box
Digital voltmeter
Analog voltmeter
Oscilloscope
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using a resistor in series with an analog ammeter?
To decrease the voltage
To protect it from excessive current
To measure resistance
To increase the current
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of a voltmeter on a low impedance circuit?
No effect
Significant effect
Increases impedance
Decreases impedance
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