SSC JE Estimation and Costing Quiz 16 for ESE & GATE EE Exams

Question 1

The annual working cost for a 60 MW power station operating at annual load factor of 50% is represented by the formula: Rs.

where the various terms have their usual meaning. The power station has the following data: Capital cost of building and equipment = Rs. 75 x 10⁷; Annual cost of fuel, oil and wages = Rs. 135 x 10⁶; Interest and depreciation on building and equipment are 10% and annual cost of organization and interest on cost of site etc. = Rs. 75 x 10⁵. The value of b is

Question 2

The thermal efficiency and electrical efficiency of a steam power station are 30% and 92% respectively. The overall efficiency of the station is

Question 3

The annual working cost for a 60 MW power station operating at annual load factor of 50% is represented by the formula: Rs.

where the various terms have their usual meaning. The power station has the following data: Capital cost of building and equipment = Rs. 75 x 10⁷; Annual cost of fuel, oil and wages = Rs. 135 x 10⁶; Interest and depreciation on building and equipment are 10% and annual cost of organization and interest on cost of site etc. = Rs. 75 x 10⁵. The value of a is

Question 4

A factory has a maximum load of 240 kW at 0.8 p.f. lagging with an annual consumption of 50,000 units. The tariff is Rs. 50 per kVA of maximum demand plus 10 paise per unit. The flat rate of energy consumption is

Question 5

A generating plant has a maximum capacity of 100 kW and costs Rs. 1,60,000. The annual fixed charges are 12%. If the load factor is 50%, the fixed charges per kWh will be

Question 6

An industrial concern has a maximum demand of 500 kVA at 0.8 p.f. lagging and an annual load factor of 60%. If electric power is supplied from a grid system at Rs. 125 per kVA of maximum demand plus 5 paise per unit, the cost per unit is

Question 7

To reduce the cost of the electricity generated

Question 8

A transformer costing Rs. 90,000 has a useful life of 20 years. If the scrap value of the equipment is Rs. 10,000, the annual depreciation charge using straight line method is

Question 9

Which of the following generating plants has the minimum operating cost?

Question 10

Fig. shows the daily load curve of a generating station.

What is the maximum demand?