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.Management Sciences
Category: Applied Mechanics and Graphic Statics
If the given forces P,, P2, P3 and P4 are such that the force polygon does not close, then the system will___________________?
A. be in equilibrium
B. always reduce to a resultant force
C. always reduce to a couple
D. both (A) and (C)
When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are________________?
A. straight line and parabola
B. straight line and circle
C. circle and straight line
D. circle and parabola
Coefficient of friction depends on__________________?
A. nature of surfaces only
B. area of contact only
C. both (A) and (B)
D. none of the above
The torque produced by a force depends on__________________?
1) the magnitude of the force
2) the direction of the force
3) the’point of application of the force relative to origin
The correct answer is?
A. only (1)
B. both (1) and (2)
C. both (1) and (3)
D. all (1), (2) and (3)
If the angular distance, 0 = 2t3 – 3t2, the angular acceleration at t = 1 sec. is__________________?
A. 1 rad/sec2
B. 4 rad/sec2
C. 6 rad/sec2
D. 12 rad/sec2
In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?
A. howe truss
B. king post truss
C. fink truss
D. warren truss
Force polygon method is applicable for_____________________?
A. any copianar force system
B. a system of parallel forces only
C. concurrent copianar force system
D. non-concurrent copianar force system
Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?
A. disc with larger density
B. disc with smaller density
C. both discs will have same rotational inertia
D. none of the above
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