Electronics - Alternating Current vs Direct Current

Exercise :: Alternating Current vs Direct Current - General Questions

16. 

Power companies supply ac, not dc, because:

A. it is easier to transmit ac
B. there is no longer a need for dc
C. dc is more dangerous
D. there are not enough batteries

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

17. 

If a waveform period is determined to be 10 microseconds in duration, what is the frequency of the signal?

A. 100 Hz
B. 1000 Hz
C. 10 kHz
D. 100 kHz

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

18. 

The phase difference between sine waves of different frequencies is:

A. equal to their frequency differences
B. the difference in their fixed time displacement
C. the same throughout time
D. constantly changing

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

19. 

If a sine wave signal is 100 mV peak-to-peak, how many volts would be measured by a voltmeter?

A. 14.14 mV
B. 35.4 mV
C. 63.7 mV
D. 70.7 mV

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

20. 

What term expresses the frequency of a rectangular wave?

A. Hz
B. period
C. PRF
D. PRT

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.