SSC JE: Estimation and Costing : Quiz 7 for ESE & GATE EE Exams

Question 1

The annual expenditure on the central organization and salaries of high officials for a power plant is included in

Question 2

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 c is

Question 3

A factory takes a steady load of 200 kW at a lagging power factor of 0.8. The tariff is Rs. 100 per kVA of maximum demand per annum plus 5 paise per kWh. The phase advancing plant costs Rs. 500 per kVAR and the annual interest and depreciation together amount to 10%. The most economical p.f. is

Question 4

A generating station has the following data; Installed capacity = 300 MW; Plant capacity factor = 50%; Annual load factor = 60%; Annual cost of fuel, oil etc. = Rs. 19 x 10⁸; Capital cost = Rs. 10¹⁰; Annual interest and depreciation = 10%. The cost per unit generated is

Question 5

A factory takes a steady load of 200 kW at a lagging power factor of 0.8. The tariff is Rs. 100 per kVA of maximum demand per annum plus 5 paise per kWh. The phase advancing plant costs Rs. 500 per kVAR and the annual interest and depreciation together amount to 10%. What is the capacity of the phase advancing plant?

Question 6

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?

Question 7

A distribution transformer costing Rs. 50,000 has a salvage value of Rs. 5000. If annual depreciation charge is Rs. 3000 on straight line method, the useful life of the transformer is

Question 8

In question 19, what is the reactive power drawn by the factory?

Question 9

The two-part tariff is used for

Question 10

A consumer needs one million units per year and his annual load factor is 50%. The tariff in force is Rs. 1200 per kW of maximum demand plus Rs. 2.40 per unit. If he improves his load factor to 100%, saving in energy cost per annum is