Machine Design
Set screws are

Slotted for a screw driver and generally used with a nut
Used to prevent relative motion between parts
Similar to small size tap bolts except that a greater variety of shapes of heads are available
Similar to stud

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Which is correct statement?

Which one is rigid will depend on several other factors
Both will be equally rigid
A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Jam nut is a locking device in which

A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip
One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
A slot is cut partly in middle of nut and then slot reduced by tightening a screw
Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter spitted and bent in reverse direction at other end

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Machine Design