Question 1

Superimposing an AC voltage of 3.54 Vrms with a DC source of 10 V results in a waveform that:

Accepted Answer

A) peaks at 15 V. 
B) peaks at 13.54 V. 
C) peaks at 20 V. 
D) both B and C

Question 2

- opens in Figure 8-2.

Accepted Answer

A) decreases 
B) remains the same 
C) increases

Question 3

The time (T) and the frequency (f) of an AC waveform are related as:

Accepted Answer

A) universally proportional. 
B) directly proportional. 
C) inversely proportional. 
D) complimentary proportional.

Question 4

The value of a AC sine wave at any instant can be represented by:

Accepted Answer

A) a phasor whose angle and magnitude are representative of the AC signal. 
B)   
C) a graph of the voltage or current vs. the angular measurement. 
D) all of these.

Question 5

The period of most AC waveforms is measured in units of:

Accepted Answer

A) alternations. 
B) seconds. 
C) cycles. 
D) revolutions.

Question 6

Commercial line voltages are usually square waves at a frequency of 60 Hz.

Accepted Answer

A) True 
 B)False

Question 7

The period of a 5 Hz wave form is 200 ms.

Accepted Answer