How to set defacult value kendo dropdown list in angualr?

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Kendo-UI

Angular5

I have kendo dropdown list getting data from list like text and value

When I load the page I need to set the dropdown value

<kendo-dropdownlist [data]="item.listAnswerOptions"
                            id="Q{{item.QuestionId}}"
                            [valuePrimitive]="true"
                            textField="text"
                            valueField="value"
                            [(ngModel)]="item.EncAnswerOption">

        </kendo-dropdownlist>

where In

[(ngModel)]="item.EncAnswerOption">

item.EncAnswerOption

have the value to be set

What I have tried:

<pre><kendo-dropdownlist [data]="item.listAnswerOptions"
                            id="Q{{item.QuestionId}}"
                            [valuePrimitive]="true"
                            textField="text"
                            valueField="value"
                            [(ngModel)]="item.EncAnswerOption">

        </kendo-dropdownlist>