Question

________ is a measuring device which can evaluate and record the electrical power passing through a circuit in a certain time.

By implementing it, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered device or a business.

1. DC meter
2. Air flow meter
3. Watt hour meter
4.  AC meter

Answer 1

Correct Answer - Option 3 : Watt hour meter

Watt-hour meter is a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time.

By implementing the Watt-hour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered device or a business.

Electrical utilities install these meters at their consumer’s place to evaluate the electrical usage for the purpose of billing.

Usually, the billing unit is Kilowatt-hour (kWh).

This is equal to the total usage of electrical energy by a consumer of one kilowatt during a period of one hour and it is also equal to 3600000 joules.

The Watt-Hour Meter is often referred as energy meter or electric meter or electricity meter or electrical meter.

The Watt-hour meter is classified into three different types as follows:

1. Electromechanical type induction meter
2. Electronic energy meter
3. Smart energy meters