Why my sine wave block in matlab simulink is not giving desired result??

When I am trying to get an output from sine wave with amplitude 220v and frequency 2*pi*50, the scope is showing undesirable signal. Is this something related to setting or I am missing a point?

[Mostafa]

Try using a fixed-step solver.

Open model Configuration Parameters (Ctrl+e)
solver options -> Type: "Fixed-step" instead of "Variable-step"
Additional options -> Fixed-step size: 1e-3

Simulate and check results.