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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 1
46.
The load cup of a screw jack is made separate from the head of the spindle to
enhance the load carrying capacity of the jack
reduce the effort needed for lifting the working load
prevent the rotation of load being lifted
reduce the value of frictional torque
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Two shafts A and B under pure torsion are of identical length and identical weight and are made of the same material. The shaft A is solid and the shaft B is hollow. We can say that
shaft B is better than shaft A
shaft A is better than shaft B
both the shafts are equally good
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The centre distance between two meshing involute gears is equal to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Which of the following statement is wrong ?
The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts
The V-belt drive is used with large centre distance
The V-belt may be operated in either direction with tight side of the belt at the top or bottom
The ratio of driving tensions in V-belt drive is more than flat belt drives
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
In a flange coupling, the thickness of flanges is taken as one-half the diameter of shaft.
Agree
Disagree
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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