Tariff Numerical-Electrical Engineering (MCQ) questions and answers

1. The following two tariffs are offered :
(a) Rs 100 plus 15 paise per unit ;
(b) A flat rate of 30 paise per unit ;
At what consumption is first tariff economical ?

A.Below 666.7 unit
B.Above 400.8 unit
C.Above 600.2 unit
D.Above 666.7 unit

Explain:-

2.State TRUE/FALSE for the following statements.
A. In Blocked rate tariff,the price per unit in the first block is lowest.
B. In Uniform rate Tariff,the price charged per unit is constant.

A.1-TRUE,2-FALSE
B. 1-TRUE,2-TRUE
C. 1-FALSE,2-TRUE
D. 1-FALSE,2-FALSE

Explain:-

3. A generating station has an installed capacity of 50 MW and delivers 250×10^6 units per annum.If the annual fixed charge are ₹160 per KW installed capacity and running charges are 4 paise per KWh,find the cost per unit generated.

A. 7.6 paise
B. 7.4 paise
C. 7.2 paise
D.7.8 paise
Explain:-

4. An industrial consumer has a Max.Demand of 150KW at a load Factor of 50%.The Tariff is Rs900 per KVA of Max. Demand per year + Rs 1.30 per KWH of energy Consumed.If the Average PF=0.75 Lagging, the Yearly electricity bills :

A. 5,55,200/-
B. Rs 10,34,100/-
C. 12,00,000/-
D. 15,00,000/-

Explain:-

5. The most ideal tariff for the consumer is which tariff?

A. Two part tariff
B.Blocked rate tariff
C. Simple rate tariff
D.Three part tariff.

6. Block rate tariff, where energy charge decreases with the increase in energy consumption,

A. Encourages the consumers to improve the power factor.
b. Encourages the consumers to restrict their demand.
C. Discourages the consumers for more consumption.
D. Encourages the consumers for more consumption.

7. Which tariff is also known as the average power factor tariff?

A. Sliding scale tariff.
B. kW tariff.
C. kVAR tariff.
D. kVA maximum demand tariff

8. What are the Consequences of Low Power factor ?

A.increase the rating of station equipment only
B. on the line losses increase
C. A and B D. None of these

9.A Load Factor of Domestic Load is_________?

A.20 to 40%
B. 10 to 15%
C. 50 TO 60%
D. 60 TO 70%

10. The following two Tariff are offered to a consumer Rs 400 + Rs 1.43 per KWH; A Flat rate of Rs 1.83 per KWH.The NO. of unit consumed for which the First Tariff will be economical is:-

A. More than 4000
B.More than 3000
C. More than 1000
D. More than 2000