Q.no 31. If core diameter of bolt is 13.8cm the it’s nominal diameter is given by?
A : 17.27mm
B : 15.34mm
C : 14.67mm
D : 16.34mm
Q.no 32. When the shaft is subjected to pure torsional moment, the torsional stress is given by?
A : None of the listed
B : 32M/πdᵌ
C : 16M/πdᵌ
D : 8M/πdᵌ
Q.no 33. If shaft diameter is 40mm, calculate the diameter of sleeves in clamp coupling.
A : 100mm
B : 60mm
C : 40mm
D : 80mm
Q.no 34. The spring in which number of leaves, which are held together by U-clips are called as
A : Leaf spring
B : semi-elliptical leaf
C : Helical spring
D : elliptical springs
Q.no 35. Find the Wahl’s factor if spring index is 6.
A : 1.202
B : 1.2424
C : 1.2525
D : 1.5252
Q.no 36. The laminated springs are given initial curvature
A : To have uniform strength
B : To make it more economical
C : So that plates may become flat, when subjected to design load
D : None of these
Q.no 37. The angle of twist for a transmission shaft is inversely proportional to
A : shaft diameter
B : (shaft diameter)2
C : (shaft diameter)3
D : (shaft diameter)4
Q.no 38. The spring used in mechanical toys is
A : Leaf spring
B : Spiral spring
C : Helical spring
D : All of these
Q.no 39. Two shafts will have equal strength, if
A : diameter of both the shafts is same
B : angle of twist of both the shafts is same
C : material of both the shafts is same
D : twisting moment of both the shafts is same
Q.no 40. Value of R40 series is ….
A : 13
B : 16
C : 14
D : 1.12
Answer for Question No 31. is a
Answer for Question No 32. is c
Answer for Question No 33. is a
Answer for Question No 34. is b
Answer for Question No 35. is c
Answer for Question No 36. is c
Answer for Question No 37. is d
Answer for Question No 38. is b
Answer for Question No 39. is d
Answer for Question No 40. is b
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