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The main function of economizer of a boiler in a plant is to

Recent questions and answers in Electric Power Generation

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Which of the following plants will take least time in starting from cold conditions to full-load operation? A) Nuclear power plant B) Steam power plant C) Hydro-electric power plant D) Gas turbine plant

answered Sep 17, 2018 in Electric Power Generation
2 answers 45 views

What do we use to generate electricity?

answered Aug 25, 2018 in Electric Power Generation
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What is the most common type of power plant?

answered Aug 11, 2018 in Electric Power Generation
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1 answer 24 views

What does a substation do?

answered Aug 11, 2018 in Electric Power Generation
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Explain thermal power plant with diagram.

answered Jun 26, 2018 in Electric Power Generation
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A generating station has a maximum demand of 500 MW. The annual load factor is 50 percent. The energy generated per annum will be: A) 2.19 x 106 MWhr B) 600 MWhr C) 250 MWhr D) 7.50 x 106 MWhr

answered Jun 17, 2018 in Electric Power Generation
1 answer 40 views

Which of the following are the basic elements in a 555 timer IC? (a) Two comparators (b) A flip-flop (c) A discharge transistor (d) A resistive voltage divider  A) (a), (b) and (d) B) only (a), (b) and (c) C) only (b), (c) and (d) D) only (a), (b), (c) and (d)

answered Jun 17, 2018 in Electric Power Generation
1 answer 21 views

A large hydropower station has a head of 324 metre and an average flow of 1370 metre3 / second. The available hydraulic power from this station will be: A) 4.35 MW B) 4.15 MW C) 4.47 MW D) 4.73 MW

answered Jun 17, 2018 in Electric Power Generation
2 answers 36 views

A gas turbine works on: A) Carnot cycle B) Brayton cycle C) Dual cycle D) Rankine cycle

answered Jun 17, 2018 in Electric Power Generation
1 answer 30 views

 Overall thermal efficiency of a steam power station in India is in the range: A) 18-24 percent B) 30-40 percent C) 44-62 percent D) 68-79 percent

answered Jun 17, 2018 in Electric Power Generation
2 answers 18 views

Which of the following components is not a part of hydro-electric plant ? (a) Penstock (b) Spillway (c) Surge tank (d) Economiser 

answered Jun 15, 2018 in Electric Power Generation
1 answer 13 views

Kaplan turbines are used whenever the water head is (a) low (b) high (c) medium (d) (b) and (c) 

answered Jun 2, 2018 in Electric Power Generation
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A gas turbine power plant is best suited for (a) base load (b) peak load (c) emergency purpose (d) None of the above

answered May 27, 2018 in Electric Power Generation
0 answers 16 views

The cost of fuel transportation is minimum in (a) Steam power plant (b) Diesel power plant (c) Hydro-electric plant (d) Coal based power plant 

asked May 26, 2018 in Electric Power Generation
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Which one is not a commonly used coolant for fast breeder reactor ? (a) Water (b) Liquid metal (c) Helium (d) Carbon dioxide 

asked May 26, 2018 in Electric Power Generation
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Combined cycle power plants may need (a) MHD generator (b) Thermionic converter (c) Thermoelectric generator (d) All of the above 

asked May 26, 2018 in Electric Power Generation
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The pH value of water used for boiler of thermal power plant is (a) unity (b) 7 (c) slightly more than 7 (d) 10 

asked May 26, 2018 in Electric Power Generation
1 answer 15 views

Material used inside the breather to prevent moisture entering the transformer is

answered May 15, 2018 in Electric Power Generation
1 answer 66 views

The type of alternator used in hydroelectric power stations is

answered May 15, 2018 in Electric Power Generation
1 answer 15 views

For high head and low discharge, the water turbine used is

answered May 15, 2018 in Electric Power Generation
1 answer 18 views

Large size steam plants and nuclear plants are suitable for   (a) Intermediate loads (b) Base loads (c) Both base and peak loads (d) Peak loads 

answered May 13, 2018 in Electric Power Generation
0 answers 19 views

The auxiliary power consumption in a thermal power plant is (A) 2-5% (B) 5-10% (C) 10-15 % (D) 15-20%

asked May 13, 2018 in Electric Power Generation
1 answer 10 views

In a power station, the cost of generation of power reduces when (A) diversity factor alone increases (B) both diversity factor and load factor increase. (C) load factor alone increases. (D) both diversity factor and load factor decrease,

answered May 13, 2018 in Electric Power Generation
1 answer 18 views

Which source is best suited for electricity generation in a remote rural area? (A) Nuclear Power plant (B) Solar farm (C) Wind farm (D) Biomass

answered May 13, 2018 in Electric Power Generation
1 answer 17 views

Power generation cost reduces as (A) Diversity factor increases and load factor decreases. (B) Diversity factor decreases and load factor increases. (C) Both diversity factor and load factor increase. (D) Both diversity factor and load factor decrease

answered May 8, 2018 in Electric Power Generation
1 answer 48 views

The overall efficiency of Thermal Power Plant is equal to _______________ .  (A) Regenerative Cycle Efficiency (B) Renkine Cycle Efficiency (C) Carnot cycle efficiency (D) None of the above

answered May 8, 2018 in Electric Power Generation
1 answer 18 views

The problematic pollutants in emission of coal based generating plants __________.  (A) SO₂ (B) NOx (C) CO (D) All of the above

answered May 8, 2018 in Electric Power Generation
1 answer 27 views

In a thermal power plant, ash is collected in

answered May 3, 2018 in Electric Power Generation
1 answer 31 views

In order to have a lower cost of electrical energy generation the load factor  (1) and the diversity factor should be low (2) should be low but the diversity factor should be high (3) should be high but the diversity factor should be low (4) and the diversity factor both should be high

answered Apr 29, 2018 in Electric Power Generation
1 answer 13 views

The rankine cycle efficiency of steam power plant is  (1) 60-80% (3) 30-45% (2) 45-80% (4) 20-30%

answered Apr 29, 2018 in Electric Power Generation
1 answer 21 views

The function of a surge tank is to  (1) produce surge in the pipeline (2) relieve water hammer pressure in the penstock (3) supply water at constant pressure (4) none of above

answered Apr 29, 2018 in Electric Power Generation
1 answer 14 views

In hydroelectric power plants  (1) both operating and initial cost are high (2) both operating and initial cost are low (3) operating cost is low and initial cost is high (4) operating cost is high and initial cost is low

answered Apr 29, 2018 in Electric Power Generation
1 answer 17 views

In steam turbine terminology, diaphragm refers to  (1) separating wall between rotors carrying nozzles (2) the ring of guide blades between rotors (3) a partition between low and high pressure sides (4) the flange connecting the turbine exit to the condenser

answered Apr 29, 2018 in Electric Power Generation
1 answer 20 views

Reheating in a gas turbine (1) increases the compressor work (2) decreases the compressor work (3) increases the turbine work (4) decreases the turbine work

answered Apr 29, 2018 in Electric Power Generation
1 answer 22 views

The use of regenerator in a gas turbine cycle  (1) increases efficiency but has no effect on output (2) increases output but has no effect on efficiency (3) increases both efficiency and output (4) increases efficiency but decreases output

answered Apr 29, 2018 in Electric Power Generation
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