Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one_______________?

Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one_______________?

A. ellipse
B. hyperbola
C. parabola
D. circle
E. none of the above

In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be____________________?

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
E. none of the above

The value of shear stress which is induced in the shaft due to the applied couple varies____________________?

The value of shear stress which is induced in the shaft due to the applied couple varies____________________?

A. from maximum at the center to zero at the circumference
B. from zero at the center to maximum at the circumference
C. from maximum at the center to mini-mum at the cricumference
D. from minimum at the centro to maxi-mum at the circumference
E. none of the above