Well the NTNU does require the TOEFL score and it is on the basis of your condition of course for the scores

TOEFL scores for the Exchange Students

TOEFL (Test of English as a Foreign Language) with a minimum score of 90 points on the internet based test

IELTS (International English Language Testing Service) with a minimum overall band score of 6.5

There are no formal language requirements for exchange students from EU countries at NTNU,

Post Graduate Courses

TOEFL (Test of English as a Foreign Language) score of at least 90 (internet-based test).

IELTS (academic version) Overall Band score of at least 6.5, or

The University of Cambridge 'Certificate of Proficiency in English' or 'Certificate in
Advanced English'

For the International Master Programs

TOEFL (Test of English as a Foreign Language):

Minimum score of 90 points on the internet based test

Minimum score of 600 points on the paper based test

IELTS (International English Language Testing Service) with a minimum overall band score of 6.5

Address:

The Norwegian University of Science and Technology

Høgskoleringen 1, 7491

Trondheim, Norway

Phone: +47 73 59 50 00