in decreasing the slip of the belt

in increasing the slip of the belt

to keep the belt in centre on a pulley while it is in motion

to increase pulley life

50 Degree Centigrade above upper critical temperature

50 Degree Centigrade below upper critical temperature

50 Degree Centigrade above lower critical temperature

50 Degree Centigrade below lower critical temperature

Right

Wrong

P_t/P

P_s/P

P_c/P

least of P_t, P_s and P_c/P

Transverse fillet welded joint

Parallel fillet welded joint

Butt welded joint

all of these