No other books are required for entrance. It requires your knowledge till 12th that you have achieved.

Hlo Rinku,

Dayalbagh  is very good institute for pursuing polytechnic.it is very disciplined and strict  institute,placement

are also good.

Now coming to your question ,best book  for the preparation is -Arihant publications book for polytechnic  and for practise you can

take upkar's publications solved sample paprers.

I would like to recommened you some more points for your preparation-

• Do the 5 year past papers ,you will get  the idea  about what type of questions you have to face.
• Go through ncert textbook .
• practise more and more for speed and accuracy.

Best of luck.