Element 3-6 Electrical Measurements

Question 1

An AC ammeter indicates

Answer 1

effective RMS values of a current (RMS is a way of measuring the DC equivalent of a fluctuating AC)

Question 2

By what factor must the voltage of an AC circuit, as indicated on the scale of an AC voltmeter, be multiplied to obtain the peak voltage value?

Answer 2

1.414

Question 3

What is the RMS voltage at a common household electrical power outlet?

Answer 3

117V-AC

Question 4

What is the easiest voltage amplitude to measure by viewing a pure sine wave signal on an oscilloscope?

Answer 4

the Peak to Peak is the easiest to see on the screen

Question 5

By what factor must the voltage measured in an AC circuit, as indicated on the scale of an AC voltmeter, must be multiplied to obtain the average voltage value?

Answer 5

0.9 (average is a little less than what is told)

Question 6

What is the peak voltage at a common household electrical outlet?

Answer 6

165.5 (RMS Value to be multiplied by 1.414 for peak voltage)