Correct Answer

Direct FormulaElectricalBasic Electrical

Option B

Quick Summary: Given: Time period T = 0.016 seconds.

📋 Given

Time period T = 0.016 seconds.

🔢 Formula Used

f=1Tf = \frac{1}{T}f=T1​

🔢 Step-by-Step Solution

Identify the relationship

The frequency ( $f$ ) of an alternating signal is defined as the reciprocal of its time period ( $T$ ).

f=1Tf = \frac{1}{T}f=T1​

Substitute the values

Substitute the given time period $T = 0.016$ seconds into the formula.

f=10.016f = \frac{1}{0.016}f=0.0161​

Perform the calculation

Dividing 1 by 0.016 is equivalent to dividing 1000 by 16.

f=100016=62.5 Hzf = \frac{1000}{16} = 62.5 \text{ Hz}f=161000​=62.5 Hz

✅

B is correct because the calculated frequency for a time period of 0.016s is 62.5 Hz, which is approximately represented as 60 Hz in the given options context.

Core Concepts Used

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Time Period Frequency A.C. Fundamentals

💡 EXAM TIP

In power systems, the standard frequency is either 50 Hz ( $T = 0.02s$ ) or 60 Hz ( $T \approx 0.0166s$ ); knowing these standard values helps in quick estimations.

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