The ratio of solidification times of a cube-shaped mold to a spherical mold, both having the same volume and pouring temperature, is ______.

1

In sand casting, the allowance provided for easy withdrawal from a mold is called ______.

Shake allowance

True or False: The solidification time of a casting is independent of its volume and surface area.

False. The solidification time is proportional to the volume and inversely proportional to the surface area.

Which of the following statements about patterns and molds in casting is correct? A) Mould walls define where material is not allowed. B) Patterns dictate the shape of the casting. C) Patterns can be made from molds. D) Moulds can create patterns.

B) Patterns dictate the shape of the casting.

The time taken to fill a mold cavity can be calculated using the formula for flow through a sprue. If the mold volume is 1200 cm³ and the sprue length is 10 cm with a cross-sectional area of 2 cm², the time taken is ______ seconds.

10.6

Riddle: I am the force that keeps a body at rest or moving with constant velocity, as long as the sum of forces is zero. What am I?

Equilibrium

In a free body diagram, the forces acting on a body must be represented as ______.

Vectors

True or False: A fixed support allows a beam to rotate freely.

False. A fixed support prevents both sliding and rotation.

What type of loading is defined as a load that acts at a single point on a beam?

Concentrated load

The equations of equilibrium for a rigid body in two dimensions can be expressed as ______.

ΣFx = 0, ΣFy = 0, ΣMo = 0