what is waveform, amplitude, cycle, time-period, phase & phase difference

what is waveform, amplitude, cycle, time-period, phase & phase difference in AC circuits of electrical engineering “EEE”.

Waveform

The graphical representation of alternating quantities with respect to time is known as waveform or waveshape.

 Amplitude

The maximum value, positive or negative, of an alternating quantity in half cycle is known as its amplitude. It is

Cycle

One complete set of positive and negative values of alternating quantity is known as a cycle.

Time-period

 Time required 10 complete one cycle is called time-period. T= 1/f

Unit of time is second i.e. T = second/cycle

Phase

It is part of time-period after the alternating quantity passed through zero position or it is phase angle position of quantity.

Phase difference

If two alternating quantities do not reach their zero value in the same direction simultaneously then they have phase difference. The difference of phase angle between two quantities on the same reference axis is known as phase difference.

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A.C. CIRCUITS TOPIC

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3. Explain what is ac quantity : and Advantages of AC over DC in circuits
4. What is waveform, amplitude, cycle, time-period, phase & phase difference
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6. What is form factor? crest factor? peak factor? & power factor? in ac circuits
7. what is phasor diagram, phasor algebra, leading & lagging ac quantities
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11. Define what is active power, reactive power, apparent power & power factor
12. Explain what is series combination of R-C circuit in electrical engineering
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14. Resonance as applicable to simple RLC series circuit? effect on circuit performance
15. Explain three phase generation of voltage ? electrical engineering
16. Explain in detail about what is star and delta three phase system ?
17. Relation between phase voltage & line voltage in case of balanced star connected load
18. relationship between line current & phase current for delta connected 3 load
19. Relation between power consumed in a balanced star & delta connection

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