The Total Expansion of the Investment Is the Sum of the Hygroscopic

question 22

Multiple Choice

The total expansion of the investment is the sum of the hygroscopic and thermal expansions. Investments rely primarily on hygroscopic expansion to compensate for casting shrinkage of the metal.

• A) The first statement is correct; the second statement is correct.
• B) The first statement is correct; the second statement is incorrect.
• C) The first statement is incorrect; the second statement is correct.
• D) The first statement is incorrect; the second statement is incorrect.