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Quiz Description :
Name: Alternating Current and Voltage Mcq Quiz : Electrical and Electronics
Subject: Basic of Electrical Engineering
Topic: Alternating Current and Voltage
Questions: 20 objective type
Time Allowed: 20 minutes
Important for: Electrical Engineering, Electronics Engineering, Robotics Engineering students and professional for University exam, GATE and Public Sector Job written test.
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 Answered
 Review
 Question 1 of 20
1. Question
1 pointsOne sine wave has a period of 2ms, another has a period of 5ms, and other has a period of 10ms. Which sine wave is changing at a faster rate?
CorrectIncorrectUnattempted  Question 2 of 20
2. Question
1 pointsHow many cycles does a sine wave go through in 10s when its frequency is 60 Hz?
CorrectIncorrectUnattempted  Question 3 of 20
3. Question
1 pointsIf the peak value of a certain sine wave voltage is 10V, what is the peak to peak value?
CorrectIncorrectUnattempted  Question 4 of 20
4. Question
1 pointsIf the peak value of a certain sine wave voltage is 5V, what is the rms value?
CorrectIncorrectUnattempted  Question 5 of 20
5. Question
1 pointsWhat is the average value of a sine wave over a full cycle?
CorrectIncorrectUnattempted  Question 6 of 20
6. Question
1 pointsA sinusoidal current has peak value of 12A. What is its average value?
CorrectIncorrectUnattempted  Question 7 of 20
7. Question
1 pointsSine wave A has a positive going zero crossing at 30°. Sine wave B has a positive going zero crossing at 45°. What is the phase angle between two signals?
CorrectIncorrectUnattempted  Question 8 of 20
8. Question
1 pointsA sine wave has a positive going zero crossing at 0°and an rms value of 20V. What is its instantaneous value at 145°.
CorrectIncorrectUnattempted  Question 9 of 20
9. Question
1 pointsIn a pure resistor, the voltage and current are
CorrectIncorrectUnattempted  Question 10 of 20
10. Question
1 pointsThe rms current through a 10kΩ resistance is 5mA. What is the rms voltage drop across the resistor?
CorrectIncorrectUnattempted  Question 11 of 20
11. Question
1 pointsIn a pure capacitor, the voltage
CorrectIncorrectUnattempted  Question 12 of 20
12. Question
1 pointsA sine wave voltage is applied across a capacitor, when the frequency of the voltage is increased, the current
CorrectIncorrectUnattempted  Question 13 of 20
13. Question
1 pointsThe current in a pure inductor
CorrectIncorrectUnattempted  Question 14 of 20
14. Question
1 pointsA sine wave voltage is applied across an inductor; when the frequency of voltage is increased, the current
CorrectIncorrectUnattempted  Question 15 of 20
15. Question
1 pointsThe rms value of the voltage for a voltage function v = 10 + 5 cos (628t + 30°) volts through a circuit is
CorrectIncorrectUnattempted  Question 16 of 20
16. Question
1 pointsFor the same peak value, which is of the following wave will have the highest rms value
CorrectIncorrectUnattempted  Question 17 of 20
17. Question
1 pointsFor 100 volts rms value triangular wave, the peak voltage will be
CorrectIncorrectUnattempted  Question 18 of 20
18. Question
1 pointsThe form factor of dc voltage is
CorrectIncorrectUnattempted  Question 19 of 20
19. Question
1 pointsThe power consumed in a circuit element will be least when the phase difference between the current and voltage is
CorrectIncorrectUnattempted  Question 20 of 20
20. Question
1 pointsThe voltage wave consists of two components: a 50V dc component and a sinusoidal component with a maximum value of 50 volts. The average value of the resultant will be
CorrectIncorrectUnattempted