Related Questions

For same pulley diameters, center distance, belt speed and belt and pulley materials,
A Open belt drive transmits more power than crossed belt drive
B Crossed belt drive transmits more power than open belt drive
C Open and crossed belt drives transmit same power
D Power transmission does not depend upon open and crossed types of constructions
In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be
A Increase key length
B Increase key depth
C Increase key width
D Double all the dimensions
A pulley and belt in a belt drive form a
A Cylindrical pair
B Turning pair
C Rolling pair
D Sliding pair
In a belt drive, if the pulley diameter is doubled keeping the tension and belt width constant, then it will be necessary to
A Increase the key length
B Increase the key depth
C Increase the key width
D Decrease the key length
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is
A $$\frac{{\text{D}}}{{{\text{D}} - {\text{d}}}}$$
B $$\frac{{\text{D}}}{{{\text{D}} + {\text{d}}}}$$
C $$\frac{{2{\text{D}}}}{{{\text{D}} - {\text{d}}}}$$
D $$\frac{{2{\text{D}}}}{{{\text{D}} + {\text{d}}}}$$
The coefficient of friction between the belt and pulley depends upon the
A Material of belt and pulley
B Slip of belt
C Speed of belt
D All of these
Pulley in a belt drive acts as
A cylindrical pair
B turning pair
C rolling pair
D sliding pair
When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the ________ pulley must be taken into consideration.
A Smaller
B Larger
C Either A or B
D None of these
The objective of idler pulley in belt drive is to
A Decrease the tendency of belt to slip
B Increase the power transmission capacity
C Increase the wrap angle and belt tension
D All the above objectives
The width of the pulley should be __________ width of the belt.
A Equal to
B Less than
C Greater than
D None of these

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