Engineering Questions and Answers

  • Why are propeller planes slower than jet planes?
  • Why are so many indian people engineers?
  • Why are so many of the world's tallest buildings shaped like phalluses?
  • Why are so many power stations named after Edison, when he hated alternating current?
  • why are some houses built with pitched roof and some with flat roofs?
  • Why are some street lights yellow?
  • why are some tall buildings referred 2 as freestanding?
  • why are suspension bridges called suspension bridges?
  • Why are tanker trucks always cylindrical and not cubes?
  • Why are the armature and field windings of an electric motor usually wound on an iron core?
  • why are the cells (area covered by a mobile phone) benzene shaped only??
  • Why are there so many software engineers graduating from India.?
  • Why are these given materials chosen for given situations?
  • Why are tubes in most tube guitar amps mounted upside down?
  • why are we using 110volts in america but 220volts in europe?
  • why are wires carrying electricity made of copper?
  • Why aren't there lightning storage devices?
  • Why beam column joint is crucial?
  • why bench vise commonly used cast iron instead of forged steel?
  • why by increasing voltage across capacitor current also increases?
  • why can aluminium be used to make aircraft body?
  • Why can we use the technique of measuring volume as a means of counting??
  • Why can we view diamond structure as FCC with a basis of 2 or as S.C with a basis of 8?
  • why can you get decompression sickness in engineering caissons, even thought they are not underwater?
  • why can't a transformer be used 2 step up dc voltage?
  • why can't fuel cell are not able work under 0 degree temperature?
  • why can't gasoline be re-refinined from recycled motor oil?
  • Why can't I have a robot girlfriend?
  • why cant men build mechanical wings and fly?
  • Why can't Moore's Law work forever?
  • why can't the radar catch the F 117-A plane ?
  • why can't they make artificial plant?
  • why can't we use alkaline batteries in small devices???
  • Why can't we use the maximum power theorem in case of power systems?
  • Why can't you put metal in a microwave?
  • Why can't you put metal in a microwave?
  • why carbon monoxide burning or blast in after boiler?
  • why composite (steel+concrete) structures are not familiar in india?
  • Why cooling tower's are hyperbolic in section?
  • why copper and not steel is used for winding generator coils?
  • Why copper become black when kept in atmosphere?
  • why copper is used for winding the generators?
  • why cupper boand used in transmission line.?
  • Why curved walls are more stable than straight walls?
  • Why did biplanes go out of style?
  • Why did my electrical outlet explode last night?
  • why did the government classify most of tesla's research?
  • Why did this guy chose a best answer that was completely wrong?
  • Why did you get into weapons engineering?
  • Why dish antenna is designed in that shape?
  • why divergent part is larger in a c d nozzle?
  • why do architects need to know calculus, algebra,geometry and physics?
  • Why do batteries generally last longer when kept in cold storage ?
  • why do carbide end mills run undersize?
  • why do construction crews spray demolitions with water?
  • Why do heavy tonnes of concrete weights have to be placed on the pilings before construction can begin?
  • Why do magnets retract and what do thet retract?
  • why do manhole is design to be round?
  • Why do manufacturers want to implement FMEA in their design, equipment and process?
  • why do mechanical engineers use the CAD software?
  • why do nurses measure input & output?
  • Why do old factories have that classic "saw-tooth" roof design?
  • why do oudin and tesla coils have spark gaps?
  • Why do people like to speed when its rainning?
  • Why do people usually take Chemical Engineering Program wherein it's quite a tough Program?
  • Why do Philippines use 220 volts while other countries use 110 volts?
  • Why do power stations generate more electricity in summer than in winter?
  • Why do scientists experiment on animals?
  • Why do solar panels have to be flat, why can we not make a square box with a magnifying lense to heatour water
  • why do some bonds create more dense materials than others?
  • why do some cars have a conductor hangind down touching the road? How does this work?
  • why do some factories have a stack with a flame coming out of it?
  • Why do some Spark plug wires have st. steel terminals on plug end and brass terminals on distributor end?
  • why do speaker need resistance?
  • why do spinning gears generate electricity?
  • why do tesla coils have spark gaps and capacitors?
  • why do tesla coils need capacitors?
  • Why do the lighting bulbs keep blowing?
  • Why do the single phase motor driven appliances experience vibration?
  • why do they call a monkey wrench a monkey wrench?
  • why do they limit the length of the (deadleg) in plumbing?
  • Why do thin wires melt and thick wires glow? HELP?
  • Why do todays toilets sound so brutally angry?
  • why do u have to pull a lever down, to switch the main switch off, while u pull it down to put other swtchs on
  • Why do UK power supplies such as battery chargers run hot in India when the voltage is almost the same?
  • why do voltage lines turn green,trains?
  • Why do we allow electronic instruments to warm-up before use?
  • Why do we calculate RMS velocity or RMS error & why not only error or velocity????
  • Why do we call the ICs as 74 series, why not by some other names?
  • Why do we have to study physics and chem. if we are doing computer engeneering?
  • Why do we have to use electricity to run our refrigerators in the winter?
  • why do we need to wrap the equipment before we autoclave?
  • why do we not make fuse for neutrals?
  • Why do we use capacitors in continuity checker circuit ?
  • why do we use dc current?
  • why do we use frequencies in Ghz for long distance communication?
  • Why do we use state equations or differential equations to represent systems mathmatically?
  • Why do wrist watches stop when I wear them?
  • why do you need a vacum pump on a diesel engine and not on a petrol engine?
  • Why do you need to tin gold plated terminals or leads twice? (electronics)?
  • Why do you think 3-phase AC is better that single phase AC?
  • why do you think mostly BSEE students are male?
  • Why do you want to work as an Engineering Technician?
  • Why does a boat made of steel float in water when a flat piece of steel with the same mass sinks?
  • why does a cylinderthat has a radius of 20in. and 16in. in height have more volume than a radius of 16in. and?
  • why does a electrical discharge occur?
  • why does a light bulb lite?
  • Why does a mass thermodynamically schrink when cooled down?
  • Why does a rubber contracts instead of expansion on heating?
  • Why does a spark last for a fraction of a second?
  • why does a washing machine use more KW when using hot water then cold water?
  • Why does air travel faster over the top of an airplane wing?
  • why does an RF signal travel in all directions?
  • Why does concrete get hard ?
  • why does copper conduct electricity but not rubber?
  • why does copper tubing have letters L M K instead of A B C and what do they stand for ?
  • why does electrical current increase in series?
  • why does electromagnets last only a few seconds?
  • why does extention cords have rubberized coating surrounding the wire inside?
  • why does fan rotate in anti-clock wise direction?
  • Why does gravity not get less as it used up?
  • Why does high-rise buildings require better RxLevel, in terms of mobile signal?
  • Why does ice not form on my car when I park it in a uninsulated garage?
  • why does industrial Engineers can obtain a Business admnistration or any other engineering field Bachelors Deg
  • Why does it take so long to repair broken water mains?
  • why does my clock radio buzz when I do not set the alarm?
  • Why does my machine not start straight away?
  • Why does my microwave work?
  • Why does my radio signal get clearer when I touch the radio?
  • Why does New York City pump nitrogen into the sewers?
  • why does refrigerator does not give us energy?(please see details)?
  • why does single-side band (AM) doesn't need carrier to bring its signal?
  • why does snow not conduct electricity?
  • why does tex and crimp need to be examined?
  • Why does the draw form a 400w MH calculate to 455w?
  • why does the electrical current flow into the positive side of a battery?
  • Why does the end of a whip crack?
  • why does the equipment in a fitness studio need electricity?
  • Why does the nozzle reduce pressure and increase velocity of fluid?
  • Why does the output voltage signal of an NJFET CLIPS with large input signal?
  • Why does the plug go hot?
  • why does the slinky go down steps?
  • Why does the transmitted power from BTS to a mobile phone higher in GSM900, as compared to GSM1800?
  • Why does US not follow metric system?
  • why doesn't glue stick to its bottle?
  • Why doesn't my time machine work?
  • why doesnt the metal sheet in the microwave not get damaged while other metal objects get damaged?
  • Why don't electric power lines have heated coils rapped around them?
  • why don't our homes in the US come standard with DC power outlets and a large rechargable battery w/ generator
  • Why dont overhead power cables have rubber/plastic cover so that if they fall they cant cause serious injury?
  • Why don't scientists make a special machine that teleports things?
  • Why dont two radio signals at different frequencies interfere?How does a signal actualy travel in air?
  • Why dont we have flying cars?
  • Why don't we obtain red lines in a grating spectrum (when the grating plate has 15000 rulings per inch)?
  • why dont we use sun light to produce electrical energy?
  • Why don鈥檛 we understand turbulence?
  • why earh wire run top of high voltage tower?
  • why earth is a condutor?
  • why ELCB used in diffrent current ratings eg: 30mA,300mA,100mA that too 30mA for domestic purpose?
  • why electrical flash brakes tree?
  • why engineering studies are important in civil engineering ?
  • why everyone wants to become engineer only?
  • Why fan blades are twisted?
  • Why freon gas is expanded before it passes through the evaporator.?
  • why generation of power stations always a multiple of 11 ?example 22 kv, 66 kv,33 kv ,132 kv etc...?
  • why generators are rated in KVA?
  • Why GRAPHALLOY bushing are used in pumps of Nuclear Power plant? Is it because of high temperature or what?
  • Why hasn't anyone made a reciever to interpret brain waves ?
  • Why hasn't inventor Nikola Tesla received the acclaim he is due?
  • Why hasn't someone invented a fuel injection system that only uses the vapors from the gas instead of liquid?
  • Why have I not received an answer from my question.?
  • Why have the pyramids lasted so long?
  • Why haven't these things been invented yet?
  • Why horizontal axis wind turbine are more common use in commerical rather than vertical axis wind turbine?
  • Why 'i' section beams are preferred than rectangular section?
  • why in a microwave oven metal containers are not allowed although the inner body is made of SS?
  • why in a parallel resonant circuit does'nt have Q(quality factor) factor?
  • why in certain power suplies a capacitor is connected between ground and line at the input?
  • Why in gas stove gas does not spread despite there is no barrier after nozzle and instead goes straight?
  • why in india frequncy of domestic electricity is 50 Hz while in usa its 60 Hz?
  • why in the markets blue pins are popular??is blue is easy to make or is it cheaper or what....?
  • why in trucks, the PTO can not transmit all the Hp?
  • Why India is very slow on path of Research and Development in any kind of Technology ?
  • why inductors are important ?
  • why is 220 volt considered single phase? Shouldn't it be double phase? There's 3 pahse.?
  • why is a 100 watt bulb brighter than a 60 watt bulb?
  • Why is a blueprint called a blueprint?
  • why is a closed centre hydraulic system sometimes called a direct pressure system?
  • why is a license exam recommended for industrial engineers?
  • why is a pipeline backfilled before hydro-testing?
  • why is aerodynamic centre used in stability and control analysis?
  • Why is an arched bridge sturdier than other kinds of Bridges?
  • Why is an ice slab of cuboidal shape holoow from the sides towards inside.?
  • why is bad to put aluminium in the microwave?
  • Why is Dead Air such a serious crime in the Radio and TV broadcasting industry?
  • Why is having weight in the back help torque?
  • why is injection moulding a suitable process to make DVD cases?
  • why is intensity of light bulb higher in late hours of night than in the evening?
  • why is iron used in magnets ??
  • why is it dangerous to plug in a lot of things into an outlet?


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