An Observer Is Standing on the Platform of a Railway

question 7

Multiple Choice

An observer is standing on the platform of a railway station.A train goes through the station without stopping.If the frequency of the train whistle decreases by a factor of 1.2 as it approaches and then passes him,calculate the speed of the train (assume the speed of sound in air = 343 m/s) .

• A)112 km/hr
• B)31.2 km/hr
• C)56.0 km/hr
• D)62.0 km/hr
• E)122 km/hr

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Definitions:

Machining Department

A specific section or unit of a manufacturing facility where machining processes, such as drilling, milling, or turning, are carried out.

Manufacturing Overhead

All indirect costs associated with manufacturing a product, like utilities, maintenance, and salaries of support staff.

Assembly Department

A segment of a manufacturing firm where components are put together to form a finished product.

Departmental Predetermined Overhead Rates

The overhead rates assigned to specific departments based on estimated costs and activity levels, used for allocating overhead to products.