The emissive power of a body depends upon its___________________?
(A) temperature
(B) wave length
(C) physical nature
(D) all of the above
(D) none of the above
Which of the following statement is wrong ?
(A) The mortise gauge has two scribing pins
(B) The gouges are chisels with a hollow shaped blade
(C) An auger is a planning tool
(D) all of these
Forces are called coplanar when all of them acting on body lie in __________________?
(A) one point
(B) one plane
(C) different planes
(D) perpendicular planes
(D) different points
The unit of force in S.I. units is________________?
(A) kilogram
(B) newton
(C) watt
(D) dyne
(D) joule
A force acting on a body may_________________?
(A) introduce internal stresses
(B) balance the other forces acting on it
(C) retard its motion
(D) change its motion
(D) all of the above
Effect of a force on a body depends upon ________________?
(A) magnitude
(B) direction
(C) position or line of action
(D) all of the above
(D) none of the above
A force is completely defined when we specify_______________?
(A) magnitude
(B) direction
(C) point of application
(D) all of the above
(D) none of the above
If a number of forces act simultaneously on a particle, it is possible _____________________?
(A) not a replace them by a single force
(B) to replace them by a single force
(C) to replace them by a single force through C.G.
(D) to replace them by a couple
(D) to replace them by a couple and a force
Which is the correct statement about law of polygon of forces ?
(A) if any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium
(B) if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
(C) if a polygon representing forces acting at a point is closed then forces are in equilibrium
(D) if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium
(D) none of the above.
Forces are called concurrent when their lines of action meet in________________?
(A) one point
(B) two points
(C) plane
(D) perpendicular planes
(D) different planes