Alternating Current and Voltage - General Questions (2)

Directions to Solve

Alternating Current and Voltage - General Questions

9.

If a sine wave goes through 10 cycles in 20 s, the period is

A.	20 μs
B.	4 μs
C.	2 μs
D.	100 μs

Answer: Option C

Explanation:

No answer description available for this question.

10.

Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is

A.	16.54 V
B.	1.65 V
C.	10.60 V
D.	5.93 V

Answer: Option A

Explanation:

No answer description available for this question.

11.

A sawtooth wave has a period of 10 ms. Its frequency is

A.	10 Hz
B.	50 Hz
C.	100 Hz
D.	1,000 Hz

Answer: Option C

Explanation:

No answer description available for this question.

12.

When a sine wave has a frequency of 100 Hz in 12 s it goes through

A.	1/100 cycle
B.	12 cycles
C.	120 cycles
D.	1,200 cycles

Answer: Option D

Explanation:

No answer description available for this question.

13.

The average value of a 12 V peak sine wave over one complete cycle is

A.	0 V
B.	1.27 V
C.	7.64 V
D.	6.37 V

Answer: Option A

Explanation:

No answer description available for this question.

14.

A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of

A.	25 kHz
B.	12 kHz
C.	18 kHz
D.	1.3 MHz

Answer: Option B

Explanation:

No answer description available for this question.

15.

A signal with a 400 s period has a frequency of

A.	250 Hz
B.	2,500 Hz
C.	25,000 Hz
D.	400 Hz

Answer: Option B

Explanation:

No answer description available for this question.

16.

A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is

A.	45.12 mA
B.	16 mA
C.	39.6 mA
D.	22.6 mA

Answer: Option C

Explanation:

No answer description available for this question.

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