Correct Answer:- Option-B
Question29:-least count of a micrometer is
A:-0.01 mm
B:-0.001 mm
C:-0.02 mm
D:-0.002 mm
Correct Answer:- Option-A
Question30:- is a precision instrument meant for measuring angle precisely to an accuracy of 5 minutes.
A:-vemnier bevel protractor

C:-vernier caliper
D:-bevel protractor
Correct Answer:- Option-A
Question31:- is an operation of beveling the end of the drilled hole.
A:-countersinking
B:-counterboring
C:-spot facing
D:-reaming
Correct Answer:- Option-A
Question32:-1SO metric thread is designated as M12 x 1.25. Whatis 1.25 7
A:-diameter of the thread
B:-length of the thread
C:-pitch of the thread
D:-thickness of the bolt head
Correct Answer:- Option-C
Question33:-When two machined components are assembled a small gap is needed between two parts is called
A:-clearance hole
B:-one part is defective
C:-hole is not standard
D:-all of the above
Correct Answer:-Question Cancelled
Question34:- is the difference between the maximum limit of size and minimum limit of height.
A:-deviation
B:-upper deviation
C:-lower deviation
D:-tolerance
Correct Answer:- Option-D
Question35:-Least count of a vernier micrometer is
A:-5 minutes
B:-0.02 mm
C:-0.001 mm
D:-0.01 mm
Correct Answer:- Option-C
Question36:-Cast iron is manufactured from
A:-blast fumace
B:-cupola fumace
C:-puddling fumace
D:-electric process
Correct Answer:- Option-B
Question37:-The purpose of annealing are
A:-to obtain softness
B:-to relieve intemal process
C:-both Aand B
D:-none of the above
Correct Answer:-Question Cancelled
Question38:-Zinc coated iron is called
A:-tin
B:-brass
C:-bronze