The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as Principle of resolution of forces Principle of independence of forces None of these Principle of transmissibility of forces TRUE ANSWER : ? YOUR ANSWER : ?
Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.) tan(α + φ)/tanα tan(α - φ)/tanα tanα/tan (α + φ) None of these TRUE ANSWER : ? YOUR ANSWER : ?
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as Unlike parallel forces Like parallel forces Coplanar concurrent forces Coplanar non-concurrent forces TRUE ANSWER : ? YOUR ANSWER : ?
A pendulum which executes one beat per second is known as Compound pendulum Second's pendulum Torsional pendulum Simple pendulum TRUE ANSWER : ? YOUR ANSWER : ?
The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.) P = mW + C P = mW - C P = m/W + C P = C - mW TRUE ANSWER : ? YOUR ANSWER : ?
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is 7mr²/3 7mr²/5 2mr²/3 2mr²/5 TRUE ANSWER : ? YOUR ANSWER : ?
Moment of inertia of a circular section about its diameter (d) is πd3/32 πd4/32 πd3/16 πd4/64 TRUE ANSWER : ? YOUR ANSWER : ?
Static friction is always __________ dynamic friction. Equal to Greater than Less than None of these TRUE ANSWER : ? YOUR ANSWER : ?
The total motion possessed by a body, is called Weight Momentum Mass Impulsive force TRUE ANSWER : ? YOUR ANSWER : ?
The range of projectile (R) on an upward inclined plane is 2u². sin (α + β). cos α/g. cos² β 2u². sin (α - β). cos α/g. cos² β g. cos² β/2u². sin (α + β). cos α g. cos² β/2u². sin (α - β). cos α TRUE ANSWER : ? YOUR ANSWER : ?