Alternating Current and Voltage - EEE Questions and Answers

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

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

25 kHz

12 kHz

18 kHz

1.3 MHz

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

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

0 V

1.27 V

7.64 V

6.37 V

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

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

1/100 cycle

12 cycles

120 cycles

1,200 cycles

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

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

10 Hz

50 Hz

100 Hz

1,000 Hz

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

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

16.54 V

1.65 V

10.60 V

5.93 V

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

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

100

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

A square wave has a period of 60 s. The first odd harmonic is

5 kHz

50 kHz

500 kHz

33.33 kHz

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?

Wave A leads wave B by 15°.

Wave A lags wave B by 15°.

Wave A leads wave B by 105°.

Wave A lags wave B by 105°.