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Which of the following statements is/are...

Which of the following statements is/are correct regarding the instrument cup anemometer?
I. It is used to measure the speed of the wind.
II. The hollow metallic cups in it are used to increase the speed of the wind.
III. The number of revolutions made by cups is directly proportional to the speed of the wind.

A

I only

B

I, II and III

C

I and III only

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Cup anemomter is used to measure the speed of wind. It counts the number of rotations or turns which is used to calculate wind speed.
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