If you have a new project & you need a bank loan; Shall you ask the consultant for the feasibility study or the bank to make it ?

Firstly you will have to show the project budget ( cost estimate) to the consultant to approve it after doing the study of solutions and then you will have to the bank to ask for the loan you need to carry out the project.

You need to handel this with consultant and the bank will review it and may send to another consaltant to aprove it

Based on your procjet Price, you should estimate project cost budget and put it to the consultant for detial reveiw and expert openion and feasibility study,  later himself finally reveiw the feasibility study and suggest for any adjustemnt if needed then submit to the bank for loan you needed to carry out the project. 

obviously i ask my consultant.

You need first look what the bank requirement first, then decide where your direction and capabilities.

consultant, but not blindly.. you will have to look it carefully by urself aswell