Order PDF of any content from our website with a little minor Fee to donate for hard work. Online MCQs are fully free but PDF books are paid. For details: contact whatsapp +923028700085 Important notes based PDF Books are available in very little price, starting from 500/-PKR; Order Now: contact whatsapp +923028700085

AC FUNDAMENTAL MCQs

20 min Score: 0 Attempted: 0/20 Subscribe
1. A sinusoidal ac voltage which undergoes 100 reversals of polarity per second has a frequency of _______ Hz.





2. The polarity of an ac waveform reverses every _______ cycle.





3. The time period of a sine wave of 1 KHz is _______ millisecond.





4. Complex waveforms can be formed by adding _______ to the fundamental frequency.





5. A frequency of 1 KHz falls in the _______ frequency range.





6. The RMS value of a sinusoidal ac current is equal to its value at an angle of _______ degrees.





7. A sinusoidal current has an RMS value of 7.07A. Its P-P value is ___ Amperes.





8. The actual shape of a complex wave form is determined by _______.





9. In a series RL circuit, voltage _______ the current.





10. Skin effect increases the resistance of a conductor at ____ frequencies.





11. A pure inductor or capacitor dissipates _______ power.





12. In a series RLC circuit, phase difference of voltage drops across R and C is _______ degree.





13. For a sine wave RMS value = _______





14. Form factor = _______





15. The difference between AC and DC is:





16. During each cycle, a sine wave reaches its peak value _______.





17. A sine wave of 12 KHz is changing faster than a sine wave of _______.





18. A sine wave with a period of 2 ms is changing faster than a sine wave having a period of:





19. When a sine wave has a frequency of 60Hz, in 10 seconds it goes through:





20. If the peak value of a sine wave is 10v, the P-P value is





Contents Copyrights Reserved By T4Tutorials