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SSC-JE ME || Machine Design 6
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Question 1
Which of the following statement is correct regarding the beam strength of the gear design?
Question 2
The deflection of helical spring is directly and inversely proportional respectively to
Where,
D = mean diameter of coil
d = wire diameter
Question 3
A gun is designed in such a manner, that on firing, the barrel recoils against a group of 5 springs of same compliance arrange in parallel. If Gun barrel has mass 1000 kg and the barrel recoils 1.6m on firing and the initial recoil velocity of the Gun barrel is 30m/s, the spring constant of each individual spring is
Question 4
For the two shafts connected in parallel
Question 5
Diametral pitch is 4, then calculate module of the gear
Question 6
A helical spring of constant k is cut into 3 equal pieces and the 3 pieces are then combined in parallel. The equivalent spring constant will be
Question 7
A closely coiled spring of 20 cm mean diameter is having 25 coil of 2 cm diameter. Modulus of rigidity of the material is 107 N/cm2. Stiffness of spring is:
Question 8
The polar moment of inertia of a solid circular shaft of diameter d is given by
Question 9
Two concentric springs, having same number of turns and free axial length, are made of same material. One spring has mean coil diameter of 12 cm and its wire diameter is 1.0 cm, the other one has ,mean coil diameter of 8 cm and wire diameter of 0.6 cm. If the set of springs is compressed by an axial load of 2000 N, the loads shared by the springs will be
Question 10
A closed coil helical spring with mean coil diameter of 60 mm is made using a wire of diameter 6 mm. If the torsional strength is 120 MPa and the coil has 14 active turns, then the Wahl’s correction factor is,
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