The graphical method of determining the forces in the members of a truss is based on________________?
(A) method of joint
(B) method of section
(C) either method
(D) none of the two methods
The force polygon representing a set of forces in equilibrium is a_____________________?
(A) triangle
(B) open polygon
(C) closed polygon
(D) parallelogram
Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction. The speeds of the objects are____________________?
(A) 2 m/sec and 2 m/sec
(B) 3 m/sec and 2 m/sec
(C) 3 m/sec and 3 m/sec
(D) 4 m/sec and 6 m/sec
The angular speed of a car taking a circular turn of radius 100 m at 36 km/hr will be___________________?
(A) 0.1 rad/sec
(B) 1 rad/sec
(C) 10 rad/sec
(D) 100 rad/sec
The condilion for a lifting machine to be reversible is that its efficiency should be_________________?
(A) less than 50%
(B) more than 50%
(C) more than 66.67%
(D) equal to 100%
In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is_____________________?
(A) 30
(B) 50
(C) 60
(D) 80
A system of copianar forces acting on a rigid body can be reduced to________________?
(A) one force only
(B) one couple only
(C) one force and one couple only
(D) none of the above
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
The diagram showing the point of application and line of action of forces in their plane is called____________________?
(A) vector diagram
(B) space diagram
(C) force diagram
(D) funicular diagram
The bending moment in an arch is proportional to___________________?
(A) vertical ordinate of funicular polygon
(B) vertical ordinate of the arch
(C) intercept between the arch axis and the funicular polygon
(D) none of these