Explanation: The foundry processes are extensively laborious while compared to other manufacturing processes. The productivity when compared to efforts is low. The processes can be mechanized but not automated.

Explanation: The green sand has an adequate amount of water which is lost during the process but it can be restored by adding the same and it is fit for reusing. This enables it to be usable for longer production at less cost. Hence, the green sand molding is employed in most foundries.

Explanation: The dimensions of the casting depend on the method of preparation employed. Investment mould casting gives higher dimensional accuracy whereas the sand casting gives low dimensional accuracy.

Explanation: In a foundry, the sources of energy used are large in number. The major drawback of the foundry is that the energy consumption in terms of material, refractories and metal is very high.

Explanation: Cast metal parts account for more than 90% of an automobile engine and for more than 50% of the total weight of the tractor. Thus, most of the parts are made of cast iron are manufactured in foundries.

Explanation: The casting is usually made in bulk in foundries and it is not visible to the naked eyes. The castings have to be sent for X-ray testing and such kind of test to find out the internal defects. Identifying internal defects is a tough task in foundries.

Explanation: The castings are designed for the equal distribution of loads on all the members of the product and for minimum stress concentration in order to achieve more strength and more service life of the casting.

Explanation: When the pouring takes place in the foundry, the uniform melting of the metal is ensured so that the casting prepared has adequate strength. This imparts a uniform and a single directionality to the castings that are produced and provides better vibration damping capacity to the cast parts.

Explanation: The foundry produces the castings that are in a single piece. Even if the pattern of the first and second half is different, it produces the casting in a single piece. Hence, the metal joining process is eliminated in the foundry.

Explanation: The foundry process is suitable for both small and large components. It gives a high rate of production, small dimensional tolerances and good surface finish. Due to these properties, it can be used to produce intricate parts.