41) A shaft of diameter D is subjected to a twisting moment (T) and a bending moment (M). If the maximum bending stress is equal to maximum shear stress developed, then M is equal to

42) The transverse fillet welded joints are designed for

43) In straight polarity welding

44) Two closely coiled helical springs "A'" and "B" are equal in all respects but the diameter of wire of spring "A" is double that of spring "B". The stiffness of spring "B" will be _____ that of spring "A".

45) If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is