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Machine design part-2

Machine design part-2
Question:-
Option (A)
0.38 d2
Option (B)
0.46 d2
Option (C)
0.58 d2
Option (D)
none of these
Correct Option:
A
Question Solution:


Question:-
Option (A)
16
Option (B)
17
Option (C)
18
Option (D)
19
Correct Option:
C
Question Solution:

Number of wires in successive rows 1/6/12/18.
Question:-
Option (A)
sand casting
Option (B)
die casting
Option (C)
forging
Option (D)
any of these
Correct Option:
C
Question Solution:

Die casting is used for small parts. Forged product has much better strength and toughness than a cast product.
Question:-
Option (A)
toughness
Option (B)
malleability
Option (C)
hardness
Option (D)
all the above
Correct Option:
A
Question Solution:

A crankshaft is subjected to shock loads, for which toughness (a combination of strength and ductility) is the most desired property.