Mechanical Engineering Quiz

Mechanical advantage is less than velocity ratio in:

• Ideal machines

• Actual machines

• Reversible machines

• None

Centre of gravity of a solid cone is at a distance of:

• h/2

• h/3

• h/4

• h/6

Shape taken by a loaded cable is:

• Circle

• Parabola

• Hyperbola

• Ellipse

The unit of pressure in SI is:

• N

• kg/cm

• Pascal

• Dyne

The angle of friction is:

• Ratio of friction and normal

• Angle between reaction and resultant

• Friction × area

• None

Energy stored in stretched spring is:

• Kinetic energy

• Strain energy

• Heat energy

• None

Unit of moment is:

• N

• N-m

• Watt

• kg

Dynamic friction compared to static friction is:

• Same

• Less

• More

• Random

The law of moments states:

• Sum of forces = 0

• Sum of moments = 0

• Sum of mass = 0

• Sum of velocity = 0

C.G. of semicircle from base is at:

• 4r/3π

• 3r/8

• 2r/3

• r/2