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How many watt-second are supplied by a motor developing 2 hp (British) for 5 hours-
  • a)
    2.6856 x 107 watt-seconds
  • b)
    4.476 x 105 watt-seconds
  • c)
    2.646 x 107 watt-seconds
  • d)
    6.3943 x 106 watt-seconds
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
How many watt-second are supplied by a motor developing 2 hp (British...
1hp = 765 watt
In watt - seconds
= 765 x 2 x 5 x 3600
= 2.6856 x 107
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Most Upvoted Answer
How many watt-second are supplied by a motor developing 2 hp (British...
To calculate the watt-second supplied by a motor developing 2 hp (British) for 5 hours, we need to convert the horsepower to watts and then multiply by the time in seconds.

1. Conversion of horsepower to watts:
1 hp = 745.7 watts (British)
Therefore, 2 hp = 2 * 745.7 = 1491.4 watts

2. Conversion of hours to seconds:
1 hour = 3600 seconds
Therefore, 5 hours = 5 * 3600 = 18000 seconds

3. Calculation of watt-second:
Watt-second = Power (in watts) * Time (in seconds)
Watt-second = 1491.4 * 18000 = 2.6856 x 10^7 watt-seconds

Therefore, the correct answer is option 'A': 2.6856 x 10^7 watt-seconds.
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How many watt-second are supplied by a motor developing 2 hp (British) for 5 hours-a)2.6856 x 107 watt-secondsb)4.476 x 105 watt-secondsc)2.646 x 107 watt-secondsd)6.3943 x 106 watt-secondsCorrect answer is option 'A'. Can you explain this answer?
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