Mechanical Engineering - Machine Design

6.
In the levers of first type, the mechanical advantage is __________ one.
less than
equal to
more than
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
The load placed at the top of the screw in a mechanical screw jack is prevented from rotation by providing a swivelling mechanism.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)
d/8
d/6
d/4
d/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
The shear stress at a point in a shaft subjected to a torque is
directly proportional to the polar moment of inertia and to the distance of the point from the axis
directly proportional to the applied torque and inversely proportional to the polar moment of inertia
directly proportional to the applied torque and the polar moment of inertia
inversely proportional to the applied torque and the polar moment of inertia
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
Two concentric helical springs used to provide greater spring force are wound is opposite direction.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.