MACHINE DESIGN QUIZ

Power transmitted decreases

Power transmitted remains the same

Power transmitted increases to a maximum value and then decreases

Power transmitted increases

Zero at both the centroidal axis and outer surface of the member

Maximum at the centroidal axis and zero at the outer surface of the member

Zero at the centroidal axis and maximum at the outer surface of the member

Maximum at both the centroidal axis and outer surface of the member

6/ (6 + v)

4.5/ (4.5 + v)

0.75/ (0.75 + √v)

3/ (3 + v)

Calculating stresses in thick cylinders

Pre-stressing thick cylinders

Increasing the life of thick cylinders

Joining thick cylinders

Any one of the above

Heavy load

Loose belt

Driving pulley too small

Spur gearing

Helical gearing

Spiral gearing

Bevel gearing

Initial tension

Initial tension or external load, whichever is greater

Sum of the initial tension and external load applied

External load applied

0.75 t for both the straps on the inside and outside

0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside

0.625 t for both the straps on the inside and outside

0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside

Direct shear stress

Direct bending stress

Direct compressive stress

Direct tensile stress

The power transmitted will increase

The coefficient of friction between the belt and pulley decreases

The coefficient of friction between the belt and pulley increases

The power transmitted will decrease