Description : In the quest for a clean, fuel-efficient engine,why hasn't this technology,EVC,been implemented in today's modern internal combustion engine?
Last Answer : answer:Oh this is near and dear to my heart. I had the misfortune of actually doing this analysis for my employer about 10 years ago. Virtually every manufacturer has built and tested units like this. ... is hard for customers to justify the purchase. Believe me if they could sell it, they would.
Description : What would be an equal alternative to the diesel engine in transport trucks?
Last Answer : Really, really, really, really, really strong ostriches, a whole team of them would get up enough speed…eventually.
Description : The attraction of Hummer brands - Why do people own and drive SUVs in densely populated areas where all-terrain handling is not required?
Last Answer : because hummers=awesome in todays mainstream media. If you have one, you are considered in a whole other group from everyone else. The types of people that have money and can afford to fill up everytime they want to leave their house group.
Description : Heat recovery provides valuable energy sources and ....... consumption. a) Reduce energy b) Increase energy c) Increase fuel d) Reduce fuel
Last Answer : Reduce energy
Description : Golden rice is a promising transgenic crop. When released for cultivation, it will help in (a) producing a petrol-like fuel from rice (b) alleviation of vitamin A deficiency (c) pest resistance (d) herbicide tolerance.
Last Answer : (b) alleviation of vitamin A deficiency
Description : In hydrodynamic lubrication, film thickness remains unaffected by change in speeds. a) True b) Increase with increase in speed c) Decrease with increase in speed d) Disappear as the speed tends to infinty
Last Answer : b) Increase with increase in speed
Description : Scavenging is usually done to increase the a. thermal efficiency b. speed c. power output d. fuel consumption
Last Answer : ANSWER c. power output
Description : In four stroke engine which of the following is also known as power stroke a. Suction stroke b. Compression stroke c. Expansion stroke d. Exhaust stroke (Ans:c) Measurements of fuel and air ... into IC engine,___________its efficiency A. increase B. decrease C. does not alter D. unpredictable on
Last Answer : ANSWER : B
Description : Advantages of use of preheated combustion air are (A) Saving in fuel consumption (B) Reduction in scale losses (C) Increase in flame temperature (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace? (A) Increase in calorific value of the fuel (B) Increase in flame temperature (C) Reduction in scale losses (D) Saving in fuel consumption
Last Answer : (A) Increase in calorific value of the fuel
Description : For every 10% increase in the excess air; the fuel consumption increases by __________ percent. (A) 0.1 (B) 0.2 (C) 0.5 (D) 1.0
Last Answer : (A) 0.1
Description : Choke in a I.C. engine is used to control a) Camshaft speed b) Specific fuel consumption c) Air fuel mixture d) Crankshaft speed Ans. c
Last Answer : ans c
Description : The purpose of lubrication in an antifriction bearing is (a) to reduce the friction between balls and races (b) dissipation of frictional heat prevention of corrosion (c) protection of the bearing from dirt and other foreign particles (d) all of the mentioned
Last Answer : (d) all of the mentioned
Description : Can GPS trackers reduce fuel consumption?
Last Answer : A GPS tracker has very little o do with fuel consumption. Using a GPS will, however, allow you to plan the shortest route to your destination thereby reducing the fuel consumption.
Description : A waste heat recovery system in industrial process has been key to reduce ....... Consumption. a) Coal b) Fuel c) Biogas d) Oil
Last Answer : Fuel
Description : Preheating of combustion air is done to (A) Increase the adiabatic flame temperature (B) Increase the calorific value of the fuel (C) Complete the combustion of fuel (D) Reduce its requirement for effecting the complete combustion
Last Answer : (A) Increase the adiabatic flame temperature
Description : How can a dairy farmer reduce fodder consumption by his cattle and also increase milk production? (1) By increasing the supply of feed concentrate (2) By stall feeding (3) By allowing the cattle to graze in the fields (4) By administering hormones
Last Answer : (3) By allowing the cattle to graze in the fields Explanation: Like dry fodder is used to fill the empty space in the stomach of cattle, green fodder can also achieve the same result. Fat ... to milk. Green fodder can nicely substitute dry fodder and at the same time keeping the cattle satisfied.
Description : The primary objective of energy audit is to determine ways to ______ energy consumption per unit of product output. A. Increase. C) Slightly increase. B. Reduce. D) Change.
Last Answer : reduce
Description : Consider the following statements: [IES 2007] For a journal rotating in a bearing under film lubrication conditions, the frictional resistance is- 1. Proportional to the area of contact 2. Proportional to the viscosity of lubricant 3. ... 4 (b) 1 and 4 only (c) 2, 3 and 4 only (d) 2 and 3 only
Last Answer : (a) 1, 2, 3 and 4
Description : A journal bearing with hydrodynamic lubrication is running steadily with a certain amount of minimum film thickness. When the load and speed are doubled, how does the minimum film thickness vary? [IES-2008 ... Gets reduced to one-fourth of original value (d) Gets reduced to half of original value
Last Answer : (a) Remains unchanged
Description : Maximum endurance: a. Can be achieved in level unaccelerated flight with minimum fuel consumption b. Can be achieved by flying at the best rate of climb speed in straight and level flight c. Can be achieved in a steady climb d. Can be achieved by flying at the absolute ceiling
Last Answer : a. Can be achieved in level unaccelerated flight with minimum fuel consumption
Description : Protection against obesity - How promising is nicotinamide riboside, a substance found in milk?
Last Answer : Wow! Intriguing. I would be very interested to see if high doses were OK and without side effects.
Description : Fountain of youth and people celebrating their 200th birthday - How promising are Methuselah fruit flies?
Last Answer : answer:Well we won;t see 200 yr. old people in this century, they'd have to be 100 already which is probably a little late for this therapy. They don't say what the quality of life extension is. Will ... we need people living to 200 unless they work to 150, and I would not want to work that long.
Description : Which of the automotive technologies trends do you think is the most well-promising?
Last Answer : Autonomous vehicles or self-driving vehicles aim to minimize the need for human drivers and look poised to transform everyday transportation. Fleets of AVs expand the scope of last-mile ... advanced recognition technologies, such as AI-enhanced computer vision to identify obstacles along the route.
Description : What is a New Jersey document promising freedoms and Agreement is?
Last Answer : Need answer
Description : looking for honest and trusting investors in a promising invention.?
Last Answer : You can post an ad on the internet and see if there are any investors that may be interested.
Description : Strategies that know whether one non-goal state is “more promising” than another are called ___________ a) Informed & Unformed Search b) Unformed Search c) Heuristic & Unformed Search d) Informed & Heuristic Search
Last Answer : d) Informed & Heuristic Search
Description : Tumerous tissue cells are promising source of: a. Abscibic acid b. Kinin c. Alar d. Jasminoides
Last Answer : Kinin
Description : The most promising source of saving to finance development is A. the profits of organized sector B. profits of railway C. profits of Government sector D. only the profit of private sector
Last Answer : A. the profits of organized sector
Description : Traffic survey is done to find out (a) The most promising route for the railway in the area (b) The possible traffic the railway line will carry (c) Standard of railway line to be followed (d) All the above*
Last Answer : d) All the above*
Description : Once a company makes a long-term commitment to a foreign market that has a promising political and economic environment, what becomes a possibility? A)Exporting B)Joint venture C)Limited exporting D)Direct ownership E)Licensing
Last Answer : D)Direct ownership
Description : UNESCO has as one of its many promising activities, a campaign to provide Options: A) Education for all adults of the member nations B) Universal, free, compulsory primary education C) Free education to those who desires it D) Indoctrination against the dangers of communism
Last Answer : B) Universal, free, compulsory primary education
Description : Methods to reduce power consumption of air compressor
Last Answer : 1. Cooling cylinder by spraying water during compression stroke. 2. Circulation of water surrounding to cylinder by providing jackets 3. Installing inter cooler between two cylinders 4. Providing greater ... of cylinder proportions i.e. short stroke and large bore in construction with sleeve valve
Description : If the performance of diesel engine of different sizes, cylinder dimensions and power rating are to be compared, which of the following parameters can be used for such comparison? (a) Swept volume (b) Air fuel ratio (c) Specific brake fuel consumption (d) Volumetric efficiency
Last Answer : Ans :c
Description : Combustion of fuel in a furnace with oxygen enriched air results in higher (A) Flue gas volume (B) Flame temperature (C) Fuel consumption (D) Stack loss
Last Answer : (B) Flame temperature
Description : Too much of excess air in combustion results in high (A) Fuel consumption for the same heat load (B) Stack gas temperature (C) Percentage of oxygen in flue gases (D) All (A), (B) and (C)
Description : High excess air in combustion of fuels results in (A) Increased fuel consumption (B) Incomplete combustion (C) Smoky flame (D) None of these
Last Answer : (A) Increased fuel consumption
Description : Enlist drawbacks of carbureted (SI) Engine on the basis of emission fuel Consumption, Air fuel ratio and fuel distribution.
Last Answer : Drawbacks of carbureted (SI) Engine. Parameter Drawbacks Emission Does not meet emission Norms Fuel consumption Due to absence of throttling specific fuel consumption is ... distribution of charge. Fuel distribution for each cylinder is not equal for multi cylinder engine.
Description : Discuss the drawbacks of carbureted SI engine on the base of, Air-fuel ratio, fuel consumption, power output, emission.
Last Answer : 1) Air-fuel ratio: - As in SI engine Air-fuel ratio varies from 8:1 to 18.5:1 i.e. from 8 kg of air/kg of fuel to 18.5 kg of air/kg of fuel. Richer or leaner air-fuel ratio limit causes the engine to ... 8 kg of air/kg of fuel to 18.5 kg of air/kg of fuel. So emission is more in SI engine.
Description : Best reason for pressurizing waveguides with dry air A. To maintain propagation B. To maintain temperature of the waveguide C. To reduce the possibility of internal arcing D. To increase the speed of propagation
Last Answer : C. To reduce the possibility of internal arcing
Description : Shortly after take-off, the altitude of the aeroplane suffers an abrupt pitch-up and IAS rapidly decreases followed quickly by a decrease in altitude. Engine indications are normal. You should suspect what ... to gain airspeed d. Local clear air turbulence; reduce speed to VRA and ride it out
Last Answer : b. Loss of head wind or an increase in tail wind; apply full power
Description : The reason for supercharging in any engine is to be A. increase efficiency B. increase power C. effect fuel economy D. reduce weight and bulk for a given output
Last Answer : ANSWER : D
Description : Supercharging is done to a. increase the efficiency b. increase the power c. reduce the weight for a given output d. achieve fuel economy
Last Answer : ANSWER c. reduce the weight for a given output
Description : Identify the correct statement for air compressors. a. For every 5.5oC drop in the inlet air temperature, the increase in energy consumption is by 2%. b. For every 4 oC rise in ... increase in energy consumption is by 1% d. The energy consumption remains same irrespective of inlet air temperature
Last Answer : c. For every 4 oC rise in the inter air temperature, the increase in energy consumption is by 1%
Description : The percentage increase in power consumption of a compressor with suction side air filter and with the pressure drop across the filter of 200 mmWc is ____ a) 1.0% b) 3% c) 2.4% d) 1.6%
Last Answer : d) 1.6%
Description : Transformers are used onboard ships with AC generators to _____________. A. change frequency B. increase power output to modulating frequency controllers C. decrease power output to modulating frequency ... D. permit higher voltage for electric motor operation and low voltage for lighting circuits
Last Answer : Answer: D
Description : Mach number is used in connection with the speed of (a) Sound (b) Aircraft (c) Spacecraft (d) Ships
Last Answer : Ans:(b)
Description : On some diesel-electric ships, the DC propulsion motor will only attain half speed when the generator fields are fully excited. Speeds above this are obtained by _____________. A. rotating brush ... B. raising the generator engine speed C. lowering the generator engine speed D. decreasing excitation
Last Answer : Answer: B
Description : Limestone is added in the blast furnace (during pig iron manufacture) to (A) Form slag by combining with impurities (B) Supply heat by undergoing exothermic reaction with impurities (C) Reduce the coke consumption (D) Reduce slag viscosity
Last Answer : Option A