1.

Using A.C. voltmeter, the potential difference in the electrical line in a house is read to be 234 volts. If the line frequency is known to be 50 cycles per second, the equation for the line voltage is

Answer»

`V=165 sin (100 pi t)`
`V=331 sin (100 pi t)`
`V=234 sin(100 pi t)`
`V=440 sin (100-pi t)`

Solution :`E_(0)=SQRT(2)E_(rms)=234 sqrt(2)=331` volts
As, `E=E_(rms)sin (2pi ft)`
`therefore` Equation of line voltage is E = 331 sin 100 `pi t` volt


Discussion

No Comment Found

Related InterviewSolutions