A Machinist Needs to Remove a Tight Fitting Pin of Material

question 54

Multiple Choice

A machinist needs to remove a tight fitting pin of material A from a hole in a block made of material B.The machinist heats both the pin and the block to the same high temperature and removes the pin easily.What statement relates the coefficient of thermal expansion of material A to that of material B?

• A) Material B has a greater coefficient of expansion than does material A.
• B) The situation is not possible because heating block B will shrink the hole in the material as the material expands with increasing temperature.
• C) Material B has the same coefficient of expansion as does material A.
• D) Material A has a greater coefficient of expansion than does material B.

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Definitions:

Allowance for Doubtful Accounts

A contra-account reduced from accounts receivable on a company's balance sheet that represents the amount of sales that are expected not to be collected.

Accounts Receivable

Debts that customers have towards a business for items or services received but payment is outstanding.

Interest Calculation

The process of determining the interest charge on a loan or financial investment, based on the principal amount, rate, and time.

Maturity Date

The specific date on which the principal amount of a debt instrument, such as a bond or loan, becomes due and payable.