Engineering :: Machine Design
111.
A spherical gas tank is made of 1 cm steel plate hemispheres but welded together. The tank is 1503 cm in diameter. The allowable internal pressure to which tank may be subjected is the permissible stress be limited to 840 kg/sq cm would be in the range
A.
1 to 1.5 kg/sq-cm
B.
1.5 to 2.0 kg/sq-cm
C.
2.0 to 2.5 kg/sq-cm
D.
2.5 to 3.5 kg/sq-cm
E.
3.5 to 5.0 kg/sq-cm
Answer: Option C
Explanation:
112.
The compression members tend to buckle in the direction of
A.
Axis of load
B.
Perpendicular to the axis of load
C.
Minimum cross-section
D.
Least radius of gyration
E.
None of the above
Answer: Option D
Explanation:
113.
Within elastic limits the greatest amount of strain energy per unit volume that a material can absorb is known as
A.
Shock proof energy
B.
Proof resilience
C.
Resilience
D.
Impact energy limit
E.
Strain hardening
Answer: Option B
Explanation:
114.
The ratio of maximum shear stress to average shear stress for a circular section is
Answer: Option C
Explanation:
115.
The diameter of a washer is generally
A.
Equal to the diameter of bolt
B.
Slightly less than the diameter of the bolt
C.
Slight more than the diameter of the bolt
D.
Of any size that suits the application
E.
None of the above
Answer: Option C
Explanation:
116.
If two gears having 24 and 96 teeth mesh each other, they must have been cut
A.
On same setting in a machine
B.
With the one cutter
C.
With same cutter
D.
With cutter of same diameter as that of gear
E.
With cutters of same moduic
Answer: Option E
Explanation:
117.
The pressure angle an involute gear profile gear
A.
Changes with position
B.
Depends on speed of operation
C.
Depends on gear pitch and clearance
D.
Remains constant
E.
None of the above
Answer: Option D
Explanation:
118.
A cantilever beam of square section is subjected to a load W at the free end. If the length of the beam is increased and load reduced to half the deflection at the free end as compared to original deflection would be
A.
2 times
B.
4 times
C.
8 times
D.
16 times
E.
1/2 times
Answer: Option B
Explanation:
119.
A reinforced concrete beam is considered as made of
A.
Homogeneous material
B.
Composite material
C.
Isotropic material
D.
Heterogeneous material
E.
Clad material
Answer: Option D
Explanation:
120.
Rankine formula is valid upto slenderness ratio of
Answer: Option D
Explanation:
Read more: