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If an energy meter disc makes 10 resolutions in 100 sec when load of 450W is connected to it. Meter constant in revolution per kwH is?
- a)500 rev / kwH
- b)800 rev / kwH
- c)400 rev / kwH
- d)900 rev / kwH
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
If an energy meter disc makes 10 resolutions in 100 sec when load of 4...
10 revolution --> 100 sec
P = 450 w = 4.5 kW
Energy consumed in time
T = 100 sec =1/36 hr
Number of revolution = 10
1 kwH = 800 revolution
Meter constant = 800 revolution /kwH
View all questions of this test
P = 450 w = 4.5 kW
Energy consumed in time
T = 100 sec =1/36 hr
Number of revolution = 10
1 kwH = 800 revolution
Meter constant = 800 revolution /kwH
Most Upvoted Answer
If an energy meter disc makes 10 resolutions in 100 sec when load of 4...
Given:
- The energy meter disc makes 10 revolutions in 100 seconds when a load of 450W is connected to it.
To find:
- The meter constant in revolutions per kilowatt-hour (rev/kWh).
Explanation:
The energy meter measures the electrical energy consumed by a load in kilowatt-hours (kWh). The meter disc rotates a certain number of revolutions for a given amount of energy consumption. The meter constant represents the number of revolutions made by the disc for one kilowatt-hour of energy consumed.
To calculate the meter constant, we need to find the number of revolutions made by the disc for one kilowatt-hour of energy consumed.
Step 1: Calculate the time taken for one revolution.
- The disc makes 10 revolutions in 100 seconds.
- Therefore, the time taken for one revolution = 100 seconds / 10 revolutions = 10 seconds.
Step 2: Calculate the energy consumed in one revolution.
- The load connected to the meter is 450W.
- Power is given by the formula: Power = Energy / Time
- Rearranging the formula, we get: Energy = Power * Time
- Energy consumed in one revolution = 450W * 10 seconds = 4500 watt-seconds.
Step 3: Convert the energy consumed in one revolution to kilowatt-hours.
- 1 kilowatt-hour = 1000 watt-hours.
- Energy consumed in one revolution = 4500 watt-seconds / (1000 watt-hours / 3600 seconds) = 16.2 watt-hours.
Step 4: Calculate the meter constant.
- The meter constant represents the number of revolutions made by the disc for one kilowatt-hour of energy consumed.
- The energy consumed in one revolution = 16.2 watt-hours.
- Therefore, the meter constant = 1 revolution / 16.2 watt-hours = 1 / 16.2 rev/kWh.
Final Answer:
The meter constant in revolutions per kilowatt-hour (rev/kWh) is approximately 1 / 16.2 rev/kWh.
- The energy meter disc makes 10 revolutions in 100 seconds when a load of 450W is connected to it.
To find:
- The meter constant in revolutions per kilowatt-hour (rev/kWh).
Explanation:
The energy meter measures the electrical energy consumed by a load in kilowatt-hours (kWh). The meter disc rotates a certain number of revolutions for a given amount of energy consumption. The meter constant represents the number of revolutions made by the disc for one kilowatt-hour of energy consumed.
To calculate the meter constant, we need to find the number of revolutions made by the disc for one kilowatt-hour of energy consumed.
Step 1: Calculate the time taken for one revolution.
- The disc makes 10 revolutions in 100 seconds.
- Therefore, the time taken for one revolution = 100 seconds / 10 revolutions = 10 seconds.
Step 2: Calculate the energy consumed in one revolution.
- The load connected to the meter is 450W.
- Power is given by the formula: Power = Energy / Time
- Rearranging the formula, we get: Energy = Power * Time
- Energy consumed in one revolution = 450W * 10 seconds = 4500 watt-seconds.
Step 3: Convert the energy consumed in one revolution to kilowatt-hours.
- 1 kilowatt-hour = 1000 watt-hours.
- Energy consumed in one revolution = 4500 watt-seconds / (1000 watt-hours / 3600 seconds) = 16.2 watt-hours.
Step 4: Calculate the meter constant.
- The meter constant represents the number of revolutions made by the disc for one kilowatt-hour of energy consumed.
- The energy consumed in one revolution = 16.2 watt-hours.
- Therefore, the meter constant = 1 revolution / 16.2 watt-hours = 1 / 16.2 rev/kWh.
Final Answer:
The meter constant in revolutions per kilowatt-hour (rev/kWh) is approximately 1 / 16.2 rev/kWh.
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If an energy meter disc makes 10 resolutions in 100 sec when load of 450W is connected to it. Meter constant in revolution per kwH is?a)500 rev / kwHb) 800 rev / kwHc)400 rev / kwHd)900 rev / kwHCorrect answer is option 'B'. Can you explain this answer?
Question Description
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If an energy meter disc makes 10 resolutions in 100 sec when load of 450W is connected to it. Meter constant in revolution per kwH is?a)500 rev / kwHb) 800 rev / kwHc)400 rev / kwHd)900 rev / kwHCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for If an energy meter disc makes 10 resolutions in 100 sec when load of 450W is connected to it. Meter constant in revolution per kwH is?a)500 rev / kwHb) 800 rev / kwHc)400 rev / kwHd)900 rev / kwHCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of If an energy meter disc makes 10 resolutions in 100 sec when load of 450W is connected to it. Meter constant in revolution per kwH is?a)500 rev / kwHb) 800 rev / kwHc)400 rev / kwHd)900 rev / kwHCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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