Question no $1.$

$(10$ points$)$

$1\mathrm{.}1)$ List the different types of magnetic fields and specify the source of each type

$1\mathrm{.}2)$ Identify the types of the following total magnetomotive forces $(mm{f}_{\text{T}\text{o}\text{t}\text{a}\text{l}})$ and determine their peak values.

A$.mm{f}_{\text{T}\text{o}\text{t}\text{a}\text{l}}=200$Cos$()Cos(500t)$

B$.mm{f}_{\text{T}\text{o}\text{t}\text{a}\text{l}}=200$Cos$(-500t)+200$Cos$(+500t)$

C$.mm{f}_{\text{T}\text{o}\text{t}\text{a}\text{l}}=200$Cos$(-500t)$

D$.$ In two phase system:

$mm{f}_1=200$Cos$()Cos(500t)$

$mm{f}_2=200$Cos$(-90)Cos(500t-90)$

$1\mathrm{.}3)$ State the type of the stator flux if one phase of the three$-$phase supply is disconnected, as illustrated in the figure.