Description : Approximately how much of the total coal produced is used for producting thermal electricity in Pakistan A. 2.5 % B. 2.3 % C. 3 % D. 4 %
Last Answer : ANSWER: B
Description : Electricity generated by coal-fired power plants i the United States in 1990 was approximately what percentage of the entire electricity produced by all sources of power production? w) 10 percent x) 25 percent y) 55 percent z) 90 percent
Last Answer : ANSWER: Y -- 55 PERCENT
Description : What is meant by 'energy crisis'? (a) Shortage of hydro-electricity (b) Malnutrition leading to short supply of energy in the human body (c) Shortage of the thermal power (d) Impending danger of total exhaustion of fossil fuels like coal and petroleum
Last Answer : Ans: (b)
Description : Approximately what percentage of the electricity produced in the United States is consumed by residential appliances? w) 20% x) 33% y) 50% z) 66%
Last Answer : ANSWER: X -- 33%
Description : Thermal electricity is generated by using which of these? (1) Coal only (2) Coal and Natural Gas only (3) Coal, Natural Gas and Petroleum (4) None of these
Last Answer : (3) Coal, Natural Gas and Petroleum Explanation: A thermal power station is a power plant in which heat energy is converted to electric power. Thermal power is producing using fossil fuel such as coal, natural gas or petroleum.
Last Answer : (3) Coal, Natural Gas and Petroleum Explanation: A thermal power station is a power plant in which heat energy is converted to electric power. Thermal power is producing using fossil fuel such ... from thermal power plants, with about 85% of the country's thermal power generation being coal-based.
Description : Thermal electricity is generated by using which of these ? (1) Coal only (2) Coal and Natural Gas only (3) Coal, Natural Gas and Petroleum (4) None of these
Last Answer : Coal, Natural Gas and Petroleum
Description : What is the approximately Share of Pakistan population in the total population of World? A. 2.7% B. 2.8% C. 3.2% D. 4.2%
Last Answer : ANSWER: A
Description : Energy that is produced commercially from coal is called – (1) Light energy (2) Kinetic energy (3) Thermal energy (4) Potential energy
Last Answer : (3) Thermal energy Explanation: Thermal enemy, but in most cases coal is used for electricity. The steel industry uses coal (or coke rather) in blast furnaces. Thermal energy is the part of ... through heating, and not been subjected to work input or output, or any other energy-changing processes.
Description : Energy that is produced commercially from coal is called (1) Light energy (2) Kinetic energy (3) Thermal energy (4) Potential energy
Last Answer : Thermal energy
Description : Smoke volatility index is equal to smoke point plus (A) 0.42 × (% distilled at 204°C) (B) 5 mm (C) 0.84 × (% distilled at 204°C) (D) 10 mm approximately
Last Answer : (A) 0.42 × (% distilled at 204°C)
Description : Steel contains carbon approximately (A) 1.50% to 5.6% (B) 0.05% to 1.75% (C) 0.25 % (D) None to these
Last Answer : Answer: Option B
Description : Cast iron contains carbon approximately (A) 1.5% to 5.5% (B) 0.05% to 1.75% (C) 0.250 % (D) None to these
Last Answer : Answer: Option A
Description : The heat exhaust of an automobile with an internal combustion engine represents approximately what percent of the energy of the original fuel? w) 10 % x) 50 % y) 35 % z) 5 %
Last Answer : ANSWER: Y -- 35 %
Description : what is the total coal production of Pakistan? A. 3 million tones B. 3.49 million tones C. 4 million tones D. 4.2 million tones
Description : Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % D. 0.03%
Last Answer : ANSWER: D
Description : Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % 20 D. 0.03%
Description : What precaution should be taken with a vessel's impressed current cathodic protection system after a drydocking period during which the hull has been painted? A. Output currents should be carefully monitored ... slight (10-15%) overcurrent to the anodes should be allowed in order to speed drying.
Last Answer : Answer: C
Description : Rise of water table in cohesion-less soils upto ground surface reduces the net ultimate bearing capacity approximately by (A) 25 % (B) 50 % (C) 75 % (D) 90 %
Last Answer : (B) 50 %
Description : The percentage of voids in cement is approximately (A) 25 % (B) 40 % (C) 60 % (D) 80 %
Last Answer : (B) 40
Description : The ultrapure glass used to manufacture optical fibers is approximately ___pure ∙ a. 99.9 % ∙ b. 99.99 % ∙ c. 99.999 % ∙ d. 99.9999 %
Last Answer : d. 99.9999 %
Description : What is the highest % discount(approximately) that a trader can offer on his marked price, so that he ends up selling at no profit or loss, if he initially marked his goods up by 60%?
Last Answer : Let CP= Rs 100 MP= Rs100+60=160 Discount= x% then, 160*[100-x/100] =100 100-x=100*100/160 x=37.5%
Description : By selling 90 oranges for Rs 80, a man loses 40 %. How many oranges should he sell approximately for Rs 48 to gain 40 % in the transaction?
Last Answer : Let S.P. of 90 oranges be Rs. x. Then, 60 : 80 = 140 : x x = 80*140/60= 186.66 For Rs.186.66, oranges sold = 90 For Rs.48, oranges sold = 90/186.66* 48 = 23(approx.)
Description : how much of total coal produced is used in brick kilns? A. 40% B. 50% C. 60% D. 70%
Last Answer : ANSWER: C
Description : The reason for excessive clinker formation in gas producers is the (A) Use of coal/coke containing a high % of fines and ash (B) Use of fuel having too low an ash fusion temperature (C) Development of hot spots in the fuel bed and an abnormally high rate of gasification (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pick out the wrong statement. (A) High concentration of oxygen in flue gas means high stack loss (B) Gaseous fuels require the least % excess air for complete combustion (C) The ratio of fixed carbon to ... coal is called its 'fuel ratio' (D) Calorific value of natural gas is more than that of LPG
Last Answer : (D) Calorific value of natural gas is more than that of LPG
Description : Which of the following would require maximum amount of % excess air for complete combustion? (A) Coke oven gas (B) Furnace oil (C) Pulverised coal (D) Lump coal (fixed on chain grate)
Last Answer : (D) Lump coal (fixed on chain grate)
Description : Heating value of coal is approximately (A) 1000-2000 kcal / kg (B) 2000-4000 kcal / kg (C) 5000-6500 kcal / kg (D) 9000-10,500 kcal / kg
Last Answer : Ans: C
Description : Mineral matter content (M) and ash content (A) in coal are approximately related as (A) M = 1.1A (B) M = A (C) M = 1.5A (D) M = 2A
Last Answer : (A) M = 1.1A
Description : Heating value of coal is approximately in power plant (A) 1000-2000 kcal / kg (B) 2000-4000 kcal / kg (C) 5000-6500 kcal / kg (D) 9000-10,500 kcal / kg.
Last Answer : 5000-6500 kcal / kg
Description : Two coal trains, one southbound, the other westbound, reach an over and under crossing at the same instant and each proceed at 40 kilometers per hour on their respective courses. Approximately how far apart are the lead cars two hours later, to the nearest kilometer? w) 80 x) 113 y) 136 z) 160
Last Answer : ANSWER: X -- 113
Description : How much natural gas, coal, etc does it take to generate enough electricity for every electric car in America?
Last Answer : That depends mainly on how quickly America converts away from generating energy using gas and coal. See for example the article: How much more energy will the US need to electrify everything?
Description : How much more electricity does biomass energy generate than coal?
Last Answer : I am pretty sure that LESS electricity is generated withbiomass, meaning that its use is not as common as coal.
Description : Make a distinction between hydroelectricity and thermal electricity stating three points all are of distinction. What values are associated with using hydroelectricity ? -SST 10th
Last Answer : Difference between hydroelectricity and thermal electricity: 1. Hydroelectricity uses running water to generate electricity while thermal electricity is made by burning fuels like coal and petroleum. 2. ... -renewable source of energy. 3. Example of hydroelectric project in India: Bhakra Nangal
Description : What are the differences between hydro-electricity and thermal electricity? -SST 10th
Last Answer : Hydro-electricity and thermal electricity are two main forms of commercial conventional sources of energy. The main points of difference between these two types of energy sources are as follows : Nuclear ... much energy is released in the form of heat and this is used to generate electric power.
Description : How is thermal electricity generated? -SST 10th
Last Answer : Thermal electricity is generated by using coal, petroleum and natural gas.
Description : Which one of the following States does not use thermal electricity? (1) Andhra Pradesh (2) Tamil Nadu (3) Arunachal Pradesh (4) Madhya Pradesh
Last Answer : (3) Arunachal Pradesh Explanation: There is not even a single thermal plant in India's North East and most of the power needs in the region and also power source in North East Grid comes from hydro-projects. In Arunachal Pradesh, the entire electricity generation is hydro.
Description : Which kind of power accounts for the largest share of power generation in India? (1) hydro-electricity (2) thermal (3) nuclear (4) solar
Last Answer : (2) thermal Explanation: Thermal power is the largest source of power in India. There are different types of Thermal power plants based on the fuel used to generate the steam such ... and several other state level power generating companies are engaged in operating coal based Thermal Power Plants.
Description : Graphite is a good (A) Thermal & electrical insulator (B) Conductor of heat (C) Conductor of electricity (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : What kind of energy output is obtained from a ‘Steam Power Plant’? a. Heat energy b. Sound energy c. Electricity d. Thermal energy
Last Answer : c. Electricity
Description : Can coal-fired electricity generation have zero ghg emissions?
Last Answer : answer:The honest answer is no'. But it depends who's doing the talking. The coal lobby says they capture the CO2 and sequester it (Stick it someplace else). They ignore all the energy spent to dig it ... burning stove is close to net zero. If I allow my oil heat to kick on I am increasing GHGs.
Description : Why do we need coal to generate electricity?
Last Answer : Need answer
Description : In India the most important source of energy is (a) Petroleum (b) Coal (c) Nuclear (d) Hydro-electricity
Description : Critical criteria for the location of an aluminium plant in India are the availability of bauxite and: [CDS 1999] (a) coal (b) electricity (c) labour (d) ready market
Description : is commercial energy source. a) Electricity b) Coal c) Oil d) All the above
Last Answer : all of the above