Forces are called coplanar when all of them acting on body lie in perpendicular planes one plane different planes one point TRUE ANSWER : ? YOUR ANSWER : ?
Effect of a force on a body depends upon magnitude position or line of action direction All of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
Center of gravity of a solid cone lies on the axis at the height three-eighth of the total height above the base one-fourth of the total height above base one-half of the total height above base one-third of the total height above base TRUE ANSWER : ? YOUR ANSWER : ?
According to Lami's theorem If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two Three forces acting at a point will be in equilibrium If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium Three forces acting at a point can be represented by a triangle, each side being proportional to force TRUE ANSWER : ? YOUR ANSWER : ?
The effort required to lift a load W on a screw jack with helix angle a and angle of friction Wcos(a + ) Wtan(a + <)>) Wsin(a + <(>) Wtan(a-<)>) TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not the unit of work, energy and heat ? kcal hp kg m kWhr TRUE ANSWER : ? YOUR ANSWER : ?
Center of percussion is the point of C.G. the point of metacentre point of suspension the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis TRUE ANSWER : ? YOUR ANSWER : ?
A framed structure is perfect if it contains members equal to (where n = number of joints in a frame) n-2 n-l 2n-3 2n-l TRUE ANSWER : ? YOUR ANSWER : ?
The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be 10 kg, + ve sense 10 kg, – ve sense 20 kg, + ve sense 20 kg, – ve sense TRUE ANSWER : ? YOUR ANSWER : ?
The C.G. of a plane lamina will not be at its geometrical centre in the case of a square circle equilateral triangle right angled triangle TRUE ANSWER : ? YOUR ANSWER : ?