3. TÌM PHA BAN ĐẦU V < 0 Φ = + Π/2 V < 0 V < 0 Φ = + Π/3 Φ =...

3 . - MOT SO SO DO GIAI NHANH TRAC NGHIEM
MOT SO SO DO GIAI NHANH TRAC NGHIEM
3

. Tìm pha ban đầu

v < 0

φ = + π/2

v < 0

φ = + π/3

φ = + 2π/3

v < 0

φ = + π/4

v < 0

φ = + 3π/4

φ = + π/6

φ = + 5π/6

v = 0

φ = 0

v = 0

φ = ± π

A

2

A

2

A

2

3

O A

2

A

2

A

2

v > 0

A

3

v > 0

φ = - 5π/6

φ = - π/6

φ = - 3π/4

φ = - π/4

v > 0

φ = - 2π/3

φ = - π/3

φ = - π/2