Question39:-The distance from a given point on one thread to a corresponding point
on the next thread is called

A:-Pitch

B:-Lead

C:-Minor diameter
D:-Helix

Correct Answer:- Option-A

Question40:-Which type of thread is considered strong and frequently used for
power transmission?

A:-Buttress

B:-BSF

C:-Acme

D:-Metric

Correct Answer:- Option-C

Question41:-The functions of machine tools are
i. To hold and support the piece to be machined
ii. To hold and support the cutting tools
iii. To provide requisite motion to work piece, tool or both
iv. To regulate the cutting speed and feed of the tool and work piece
A:-Only ii and iii
B:-Only i and ii
C:-All of the above (i, ii, iii and iv)
D:-Only i and iv
Correct Answer:- Option-C
Question42:-A centre lathe is specified by
i. Width of the bed
ii. Face plate diameter
iii. Morse taper of centre
iv. Maximum swing over the bed
A:-only iii and iv
B:-all of the above (i, ii iii and iv)
C:-only i, iii and iv
D:-only i and ii
Correct Answer:- Option-B
Question43:-The lathe bed ways are mostly made of closed grained gray cast iron.
Its advantage are
i. Resist vibration
ii. Carbon is in free state which has self lubricating property

iii. Can withstand more compressive load
iv. It is malleable