Mechanical Engineering - Engineering Mechanics

6.
In ideal machines, mechanical advantage is __________ velocity ratio.
equal to
less than
greater than
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
The minimum force required to slide a body of weight W on a rough horizontal plane is
W sin θ
W cos θ
W tan θ
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
The moment of inertia of a square of side a about its diagonal is
a2/8
a3/12
a4/12
a4/16
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
The angular velocity (in rad / s) of a body rotating at N revolutions per minute is
πN/60
πN/180
N/60
N/180
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The maximum efficiency of a lifting machine is
1/m
V.R./m
m/V.R.
1/(m x V.R.)
Answer: Option
Explanation:
No answer description is available. Let's discuss.