When the rate of electrical energy is charged on the basis of maximum demand of the consumer and the units consumed, it is called:

When the rate of electrical energy is charged on the basis of maximum demand of the consumer and the units consumed, it is called: Correct Answer Two-part tariff

Tariff: The rate at which electrical energy supplied to a consumer is known as a tariff.

Objectives of Tariff:

  • Recovery of the cost of producing electrical energy at the power station
  • Recovery of cost on the capital investment in transmission and distribution systems
  • Recovery of the cost of operation and maintenance of a supply of electrical energy
  • A suitable profit on the capital investment

 

Desirable Characteristics of Tariff:

  • Proper return
  • Fairness
  • Simplicity
  • Reasonable profit
  • Attractive

 

Different types of tariff given below

Two-Part Tariff: When the rate of electrical energy is charged based on the maximum demand of the consumer and the units consumed, it is called a two-part tariff

In this method, the total charge is divided into two components: fixed charges and running charges

The fixed charges depend upon the number of units consumed by the consumer.

The consumer is charged at a certain amount per kW of maximum demand plus a certain amount per kWh of energy consumed.

This type of tariff is mostly applicable to industrial consumers who have appreciable maximum demand

Total charges = Rs (b × kW + c × kWh)

b = charge per kW of maximum demand

c = charge per kWh of energy consumed

Simple Tariff: If there is a fixed rate per unit of energy consumed, then it is called as a simple tariff or uniform rate tariff

Block Rate Tariff: When a block of energy is charged at a specified rate and the succeeding blocks of energy are charged at progressively reduced rates, it is called as block rate tariff.

Flat Rate Tariff: When different types of consumers are charged at different uniform per unit rates, it is called as a flat-rate tariff.

  • The consumers are grouped into different classes and each class of consumers is charged at a different uniform rate
  • The different classes of consumers are made considering their diversity and load factors
  • It is fairer to a different type of consumers and quite simple in calculations
  • The flat rate for power load is generally lower than the lighting load

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