MGVCL EXAM PAPER (30-07-2021 SHIFT 3) QUIZ

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

4 s

20 s

100 s

2 s

TRUE ANSWER : ?
YOUR ANSWER : ?

If the peak of a sine wave is 13 V, the peak-to-peak value is

13 V

26 V

6.5 V

None of these

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

26.6 V

4 V

18.8 V

2.66 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

5.93 V

1.65 V

10.60 V

16.54 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 leads wave B by 15°.

Wave A leads wave B by 105°.

Wave A lags wave B by 105°.

Wave A lags wave B by 15°.

TRUE ANSWER : ?
YOUR ANSWER : ?

A phasor represents

the magnitude and a quantity direction

the phase angle

the width of a quantity

the magnitude of a quantity

TRUE ANSWER : ?
YOUR ANSWER : ?

How many degrees are there in /3 rad?

60°

27°

180°

6°

TRUE ANSWER : ?
YOUR ANSWER : ?

The average half-cycle value of a sine wave with a 40 V peak is

6.37 V

50.96 V

14.14 V

25.48 V

TRUE ANSWER : ?
YOUR ANSWER : ?

A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is

11 V

4.6 V

1.6 V

4 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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

0 V

1.27 V

6.37 V

7.64 V

TRUE ANSWER : ?
YOUR ANSWER : ?

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