You must hold Masters degree and in some cases MPhil degree in your specific field.Preparing for PhD entrance test (PET) in advance is very important. The pattern of entrance exam of different subjects is different in colleges and universities. But the entire entrance exam in most of the subjects is maximum 100 marks and the duration of the test is two hours or in some cases it could be three hours. The question paper of PhD entrance test is divided into two parts out of which: one part contains objective type (Multiple choice questions) and another part contains subjective type questions related to the concerned subject.
Something while preparing for phd exam is
1.Attempt previous year papers
2.updated about current affairs