Discussion
A low pressure system is said to be a cyclonic storm if the wind speed exceeds :
Answer: D
A system is a cyclonic storm when the wind speed exceeds 33 knots.
The India Meteorological Department classifies low pressure systems by maximum sustained wind: depression 17-27 knots, deep depression 28-33 knots, and cyclonic storm 34-47 knots, followed by severe cyclonic storm and higher categories. So a cyclonic storm is one whose winds exceed 33 knots.
17 knots marks the start of a depression and 27 knots its upper limit, while 24 knots lies within the depression range. None of them is the cyclonic storm threshold.
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