Question

A grinder of power 750w works for 3hrs.

Calculate the energy consumed?​

Answer 1

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$\small \underline \red {\sf{ Solution :-}}$

• The total number of hours = 2 x 30 = 60

• Total energy consumption= 60x 11 = 66 kWh

• Energy cost = 66 x 5 = Rs 330

$\small \underline {\sf{ Note}}$ : -

It is to be noted that the iron has a thermostat, which trips when the set temperature is reached. The thermostat also resets when the temperature falls. This results in a duty cycle with an “on” period followed by an “off” period. This would result in a substantially lower energy consumption.

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Answer 2

Answer:

The total number of hours = 2 x 30 = 60

Total energy consumption= 60x 11 = 66 kWh

Energy cost = 66 x 5 = Rs 330

\small \underline {\sf{ Note}}

Note

: -

It is to be noted that the iron has a thermostat, which trips when the set temperature is reached. The thermostat also resets when the temperature falls. This results in a duty cycle with an “on” period followed by an “off” period. This would result in a substantially lower energy consumption.