FAMOUS PERSONALITIES QUIZ

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

6.37 V

7.64 V

1.27 V

0 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

39.6 mA

22.6 mA

45.12 mA

16 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

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

20 s

4 s

100 s

2 s

TRUE ANSWER : ?
YOUR ANSWER : ?

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

33.33 kHz

5 kHz

50 kHz

500 kHz

TRUE ANSWER : ?
YOUR ANSWER : ?

A 20 kHz pulse waveform consists of pulses that are 15 s wide. The duty cycle

cannot be determined

is 30%

is 100%

is 1%

TRUE ANSWER : ?
YOUR ANSWER : ?

A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is

50%

25%

100%

1%

TRUE ANSWER : ?
YOUR ANSWER : ?

One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

None of these

45°

0°

40°

TRUE ANSWER : ?
YOUR ANSWER : ?

If the rms current through a 4.7 k resistor is 4 mA, the peak voltage drop across the resistor is

18.8 V

26.6 V

2.66 V

4 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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 lags wave B by 105°.

Wave A leads wave B by 105°.

Wave A lags wave B by 15°.

Wave A leads wave B by 15°.

TRUE ANSWER : ?
YOUR ANSWER : ?

A signal with a 400 s period has a frequency of

2,500 Hz

400 Hz

25,000 Hz

250 Hz

TRUE ANSWER : ?
YOUR ANSWER : ?

↑