Economics Of Power Generation — Part 1 MCQs with Explanations

Base load plants are designed to operate continuously and provide a steady, reliable supply of electricity to meet the minimum demand over a long period. Peak load plants are utilized to handle periods of high electricity demand, operating only when needed to meet the peak loads. Both types of power plants are essential in the power generation system. Base load plants ensure a constant supply, while peak load plants help manage fluctuations in demand. Therefore, Option C correctly indicates that both base load and peak load plants are used in power generation.

In the context of a power plant's load curve, it typically exhibits a negative slope . This means that as the load on the power plant increases, the curve tends to slope downwards. This negative slope indicates that the power plant's output decreases as the load demand increases. This phenomenon is quite common in power generation systems, where the power plant adjusts its output to match the varying demand for electricity throughout the day. Options A and B are incorrect because: Option A: A load curve with a zero slope would imply that the power plant maintains a constant output regardless of the load demand, which is not typical in real-world scenarios. Option B: A load curve with a positive slope would suggest that the power plant's output increases as the load demand increases, which is also uncommon in most power generation systems. Option D is incorrect because it suggests that the load curve can have any combination of zero, positive, or negative slopes. However, in the context of power generation, a negative slope is the most commonly observed characteristic of a load curve, reflecting the typical behavior of power plants to reduce output as demand decreases and vice versa.

Thermocouple is the correct answer to “Which of the following is not a source of power”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

thermal plant is the correct answer to “Depreciation charges are high in case of”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Nuclear power plant is the correct answer to “_______ is invariably used as base load plant.”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

hydraulic turbine is the correct answer to “An alternator coupled to a _____ runs at slow speed, as compared to as compared to others.”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

0.95 lagging is the correct answer to “For a consumer the most economical power factor is generally”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

To excite the poles of main exciter is the correct answer to “A pilot exciter is provided on generators for which of the following reasons”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Wind power is the correct answer to “Which of the following source of power is least reliable”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Direct stroke on line conductor is the correct answer to “Which lightening stroke is most dangerous”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

thermionic converter is the correct answer to “Direct conversion of heat into electric power is possible through”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

MHD generators is the correct answer to “Direct conversion of heat into electrical energy is possible through”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

kVA is the correct answer to “A power transformer is usually rated in”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

It should be capable of starting quickly is the correct answer to “Which of the following is the essential requirement of peak load plant”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

increases is the correct answer to “In an interconnected system, the diversity factor of the whole system”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

the greatest of all ?short time interval averaged? demand during a period is the correct answer to “Maximum demand on a power plant is”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

any of the above is the correct answer to “A company can raise funds through”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Shares is the correct answer to “Which of the following are not repayable after a stipulated period”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

three part tariff is the correct answer to “For any type of consumer the ideal tariff is”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Salaries of high officials is the correct answer to “Which of the following is not an operating cost”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

any of the above is the correct answer to “Salvage value of the plant is always”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Any of the above is the correct answer to “Can generate power at unpredictable or uncontrolled times,”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

More number of consumers is the correct answer to “For high value of diversity factor, a power station of given installed capacity will be in a position to supply”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

base load plants is the correct answer to “Most efficient plants are normally used as”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Nuclear power plant is the correct answer to “Which of the following plants is almost inevitably used as base load plant”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

nuclear power plants is the correct answer to “In ______ fuel transportation cost is least.”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

hydrogen cooled is the correct answer to “Large capacity generators are invariably”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

50 to 75 percent full load is the correct answer to “Generators for peak load plants are usually designed for maximum efficiency at”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Over excited synchronous motor is the correct answer to “A synchronous condenser is virtually which of the following”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

All of the above is the correct answer to “Which of the following is the disadvantage of a synchronous condenser”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

at the receiving end is the correct answer to “In a distribution system, in order to improve power factor, the synchronous capacitors are installed”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

operating or running charges is the correct answer to “In two part tariff, variation in load factor will affect”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

Diesel power plant is the correct answer to “Which of the following power plants need the least period for installation”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

fixed cost of unit generated is the correct answer to “Diversity factor has direct effect on the”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

some loads are switched off is the correct answer to “During load shedding”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

induction motors is the correct answer to “The primary reason for low power factor is supply system is due to installation of”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

more than unity is the correct answer to “Power plant having maximum demand more than the installed rated capacity will have utilisation factor”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

all of the above is the correct answer to “Load curve is useful in deciding the”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

All of the above is the correct answer to “Approximate estimation of power demand can be made by”. This question is standard in competitive examination syllabi for Economics Of Power Generation.

either (A) or (B) is the correct answer to “The efficiency of a plant is of least concern when it is selected as”. This question is standard in competitive examination syllabi for Economics Of Power Generation.