Friendship Pins?

Types of pins in engineering multiple choice help please!?

• Which statement relating to pins is not true? a)cotter pins (split pins) are used with slotted nuts to prevent threaded connections form loosening b) Taper pins may be used to provide location for mating parts as well as for transmitting low power c) Roll pins do not require close tolerances on holes to which they are fitted d) Grooved pins achieve a tight fit in their holes by deforming the metal displaced by grooving e) Dowel pins are the best way to transmit torque from one rotating part to another Socket head cap-screws would NOT be used when: a)minimum spacing between bolts is required b) a very high strength connection is required c) clearance above the joint allows only flat spanners to be used for tightening Which of the following is NOT readily available in black mild steel? a)d section b)hexagon Which of the following is NOT readily available in aluminium? a)m section b)t section

• Answer:

  e) dowels are not best for transmitting power a key is better c) cap screws require an Allen key for tightening a) m)