Electronics - Alternating Current vs Direct Current

Exercise :: Alternating Current vs Direct Current - General Questions

6. 

What is the peak value of a household appliance that uses a 230 V ac source?

A. 163 V
B. 230 V
C. 325 V
D. 480 V

Answer: Option C

Explanation:

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

7. 

What is the waveform period difference between the 60 Hz electricity used in this country and the 50 Hz used in Europe?

A. 3 ms
B. 16 ms
C. 4 ms
D. 20 ms

Answer: Option A

Explanation:

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

8. 

Test equipment selection enables the technician to both generate signals and:

A. change circuit conditions
B. inject signals
C. sense circuit conditions
D. change signal frequencies

Answer: Option C

Explanation:

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

9. 

Why is ac current transfer more effective than dc current transfer over long distances?

A. due to the height of power lines
B. due to the use of ac generators
C. due to step-up and step-down transformers reducing I2R losses
D. due to very high voltages

Answer: Option C

Explanation:

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

10. 

A sine wave reaches maximum positive voltage at:

A. 90°
B.
C. –90°
D. 360°

Answer: Option A

Explanation:

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