Exercise: Alternating Current Vs Direct Current

Questions for: Alternating Current Vs Direct Current

Which percentages of full-amplitude rise time are used for a pulse wave?
A:
0 to 50 percent
B:
0 to 100 percent
C:
5 to 95 percent
D:
10 to 90 percent
Answer: D
No answer description is available. Let's discuss.
📖
📝
💬
👁️
A sine wave reaches maximum positive voltage at:
A:
90°
B:
0°
C:
–90°
D:
360°
Answer: A
No answer description is available. Let's discuss.
📖
📝
💬
👁️
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: C
No answer description is available. Let's discuss.
📖
📝
💬
👁️
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: C
No answer description is available. Let's discuss.
📖
📝
💬
👁️
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: A
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Ad Slot (Above Pagination)
Quiz