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MCQs 1: What is connected load?

Installed electrical load in the premises of the consumer. Maximum load a consumer draws. Load drawn by a consumer at any instant. None of the above.
Answer Explanation

MCQs 2: The power system experiences peak demand from ____________.

Midnight to 8 A.M 8 A.M to 2 P.M 2 P.M to 6 P.M 6 P.M to 10 P.M
Answer Explanation

MCQs 3: The power demand can be estimated approximately by

Load survey method. Mathematical method. Statistical method. Economic parameters.
Answer Explanation

MCQs 4: A generating station has a connected load of 55 MW and maximum demand of 20 MW. What is the demand factor?

0.4785 0.3636 2.75 1100
Answer Explanation

MCQs 5: Determine the average demand of a plant if its load factor and maximum demand are 0.60 and 30 MW.

20 MW 18 MW 50 MW 13 MW
Answer Explanation

MCQs 6: Utilisation factor is defined as the ratio of

Average demand to the rated capacity of the plant. Maximum demand on the power plant to the rated capacity of the power plant. Rated capacity of the power plant to the maximum demand. None of these
Answer Explanation

MCQs 7: A consumer consumes 400 kWh per day at a load factor of 0.3. If he increases the load factor to 0.6 without any increase in maximum demand. What is the consumption of energy in kWh?

800 kWh 650 kWh 1125 kWh 425 kWh
Answer Explanation

MCQs 8: The yearly load duration curve of a power plant is a straight line. The maximum load is 850 MW and minimum load is 650 MW. The capacity of the plant is 950 MW. What is the capacity factor and the utilization factor?

0.89, 0.78 0.83, 0.65 0.78, 0.89 0.65, 0.83
Answer Explanation

MCQs 9: Interconnected systems have the advantage of

Reduced reserve plant capacity, capital cost per kW and economy in operation. Improved load factor, diversity factor and operation efficiency and increased reliability of supply. All of these None of these
Answer Explanation

MCQs 10: Major share of power generated in India is through which means?

Hydroelectric power plants. Nuclear power plants. Thermal power plants. Gas turbine power plants.
Answer Explanation

MCQs 11: What is the modern trend in electric power generation?

To have a large number of small size thermal plants located at different places. To have large size thermal plants near load centre. To have large size thermal plants located near coal fields. None of the above.
Answer Explanation

MCQs 12: Which among the following plants have the least operating cost?

Steam plants Hydro plants Nuclear plants Diesel plants
Answer Explanation

MCQs 13: What are the essential requirements for power plants to be operated as peak load plants?

Capability of quick start, synchronisation and taking up of system load. Quick response to load variations. Low capital cost. All of these. None of these.
Answer Explanation

MCQs 14: In a steam power station, electric power is generated at what power?

440 V 1.1 kV 11 kV 33 kV
Answer Explanation

MCQs 15: Annual operating cost of a generating plant consists of

Fixed charges Semi fixed charges Operating or running charges All of these None of these
Answer Explanation

MCQs 16: For a nuclear plant, what is its useful life?

10 years 30 years 100 years 60 years
Answer Explanation

MCQs 17: What happens in a load shedding?

System voltage is reduced. System frequency is reduced. System loads are switched off. System power factor is changed.
Answer Explanation

MCQs 18: Why is load shedding done?

Reducing peak demand on the system. Repairing of machines. Power factor improvement. Efficient operation of equipment.
Answer Explanation

MCQs 19: Generators for the base load plants are usually designed for maximum efficiency around

20% overload Full load 75% full load None of these
Answer Explanation

MCQs 20: What are fixed charges?

Cost of investment irrespective of energy generated. Operating cost of the fuel along with cost of investment plant. Operating cost only. None of the above
Answer Explanation

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