Nov 17, 2020 · MCQ ON BELT DRIVE. Q1 – A Vbelt designated as B4430 LP has. 4430 mm diameter of small pulley. 4430mm as nominal pitch length. 4430 mm as diameter of large pulley. 4430 mm as centre distance between pulleys. Q2 – In replacing the Vbelt a complete set of new belts is used instead of replacing a single damaged belt because.