The velocity ratio of two pulleys connected by an open belt or crossed belt is ____.
directly proportional to their diameters
inversely proportional to their diameters
directly proportional to the square of their diameters
inversely proportional to the square of their diameters
Answer
Due to slip of the belt, the velocity ratio of the belt drive ______.
decreases
increases
does not change
can't say
When two pulleys of different diameters are connected by means of an open belt drive, then the angle of contact taken into consideration should be of the _____.
larger pulley
smaller pulley
average of two pulleys
either larger or smaller
The centrifugal tension in belts ______.
increases power transmitted
decreases power transmitted
have no effect on the power transmitted
increases power transmitted upto a certain speed and then decreases
When the belt is stationary, it is subjected to some tension, known as initial tension. The value of this tension is equal to the ____.
tension in the tight side of the belt
tension in the slack side of the belt
sum of the tensions in the tight side and slack side of the belt
average tension of the tight side and slack side of the belt