(a) 2n-3
(b) n-l
(c) ‘2n-l
(d) n – 2
(e) 3n-2.
where n = number of joints in a frame
Ans: a
Category: ENGINEERING MECHANICS Questions and Answers
Forces are called coplanar when all of them acting on body lie in | ENGINEERING MECHANICS
(a) one point
(b) one plane
(c) different planes
(d) perpendicular planes
(e) different points.
Ans: b
When trying to turn a key into a lock, following is applied | ENGINEERING MECHANICS
(a) coplanar force
(b) non-coplanar forces
(c) lever
(d) moment
(e) couple.
Ans: e
The product of either force of couple with the arm of the couple is called | ENGINEERING MECHANICS
(a) resultant couple
(b) moment of the forces
(c) resulting couple
(d) moment of the couple
(e) none of the above.
Ans: d
Which of the following do not have identical dimensions ? | ENGINEERING MECHANICS
(a) Momentum and impulse
(b) Torque and energy
(c) Torque and work
(d) Kinetic energy and potential energy
(e) Moment of a force and angular momentum.
Ans: e
If a rigid body is in equilibrium under the action of three forces, then | ENGINEERING MECHANICS
(a) these forces are equal
(b) the lines of action of these forces meet in a point
(c) the lines of action of these forces are parallel
(d) (b) and (c) above
(e) none of the above.
Ans: d