Engineering Questions and Answers
Why is it bad to weld cast aluminum?
Why is it better to use iron to build bridges rather than stone or steel?
Why is it that my 1993 Ford Festiva gets better gas mileage than most current economy models?
Why is my glass rod not getting charged even when i rub it silk cloth or paper?
Why is not possible to plug a battery back up to an inverter?
Why is Otto cycle called constant volume cycle?
Why is sound insulation provided by small building elements such as trickle ventilators expressed as Dn,e?
Why is steam power engine not used commercially anymore?
Why is steel not used to make foil?
Why is the formation of a supersaturated solution necessary during precipitation hardening?
Why is the live/hot wire fused and not the neutral??
Why is the main voltage in USA 110 volts and Australia 240 volts ?
Why is the symbol for a pound lb.?
Why is the tower of Pisa considered as the leaning tower?
Why is there a loud sound when a transformer bursts??
Why is there a pressure change in an absorbtion cloumn??
Why isn't there a smart enough artificially intelligent robot yet?
Why isn’t there a reverse microwave oven to cool food quickly?
Why lifts r made up of steel?
Why mercury light fittings are not suitable for street lighting?
Why might a toy manufacturer be interested in polymer properties?
Why most of engineers are joined in software field and why they leave their own field like chemical,mechanical
Why most people don't know about this car water invention ?
Why must you short out the secondary terminals on a current transformer when removing the ammeter from circuit
Why negative voltages are used in telephone lines?
Why people being electrocuted either thrown away from electric wire or pulled in by fores of electricity?
Why pixel interpolation may be required if rotation is applied to a bitmapped image ?
Why potential equivaliser is required for window type current trasformers?
Why pumping has to be done during the excavation?
Why ratings of electric generator are in KVA and not in Kilo Watt?
Why ratio detector is not sensitive to the amplitude change of incoming singal?
Why should I attach coaxial cable to the ground for conduction purposes?
Why sometimes electrical engineer use 40A breakers type MCCB and sometimes he use 100A but type MCB?
Why Spark Plug Misfires when uses in voltage limiter circuit.?
Why the hardness of Austenitic Manganese Steel castings increases after use?
Why the picture signal is amplitude modulated and sound signal frequency modulated?
Why the Steel structures of the WTC towers dissaperared, melted, or evaporated like by magic ? Bush knew it ?
Why the winding of inductor for crystal radio cannot being overlapping to each other.?
Why their is difference?
Why there are two grounds in 8086 microprocessor?
Why there is a long gap between abroad and India in civil engineering ,?
Why theres no volt between neutral from supply and star/star transformer supplyin laod?
Why this alloy as described below virtually does not consists of martensite?
Why to join electrical engg?
Why use Delta transformers at all?
Why use solar cells?
Why was the Philips screw invented?
Why we don't use 2nd and 4rth angle projection in orthographic projection?
Why we need grounding/earthing on our electrical system ?
Why we use 4..20ma as a standard?why cant it be 5..20 or something else other than starting with zero mA?
Why weak acids are more corrosive?
Why will fluorescent light glow in microwave oven?
Why wont my estes hydrogen fuel rocket launch? Please help?
Wich are the colleges in chennai offering marine engineering courses?
Wihch is bteetr ? The USA 2-pin pulg or the UK 3-pulg pin? Why we hvae 3 pin awnyay? Saetfy?
Will a solar panel generate more electricity facing the sun than not, or does it not matter?
Will adhesive thread-locking (i.e. LocTite) work on a bolt that is not torqued, like an adjustment screw?
Will an LED work as a flywheel diode?
Will my laptop's 90w power supply be a problem with an airplanes 75w power port?
Will robots rule the world?
Will science ever answer all questions perfectly and work without drawbacks?
Will someone explain the basics of mechanics to me!?
Will the US ever move to the metric system?
Will there be a new form of transportation in the future?
Will this circuit work?
Will two smaller motors connected together perform like one larger motor?
Wind turbines have no power lines?
Windkessel! ( Four element)?
With a BS in cell and molecular, could i take this job?
With modern building materials why are buildings not more aerodynamic?
Within four years of engineering how i can prepared myself.in what programs i have to engage myself?
Would a 35KW wind generator produce enough electricity to heat and light a 1100sq. ft. home?
Would a ballast regulate current alone or EMF as a whole?
Would a blanket with magnetic strips be practical?
Would a double 4" v-grooved channel welded together to form the letter "E" be stronger than 8" channel?
Would a sugar plumb be straight?
Would like to know the min & max parameters for luminosity on a factory workshop floor?
Would like to know what type of LED bulbs available in India to run on 240 VAC?
Would water be a good fluid for VC cooling systems?
Wound rotor motor lead identification?
Wt do tou think iitjee 2007 AIR 500 will go at? and AIR 1000 and AIR 1500?
X rays for your laptop??
X-Ray Defraction, lattice parameter calculation with D and HKL?
Y do i fail in first year of engineering?can any one tell me?
Y doesnt some wattmeters hav non uniform readings?
Year 12 electronics again lol?
You advice for engineer students?
You do 150 J of work on a machine and the machine does 90 J of work as a result. What is the efficiency of the
Zener diodes and Zener breakdown?
Zt = impedance total, Ir = resistor current, Ic= capacitor current, Vs= voltage source , Yt= total admittance?
"ANFIS in Electrocardiography"?
"how much electricity does a light bulb use?
"In 1895 Sivasanker Thalpad of Bombay had constructed an aircraft which flew to an altitude of 1500 feet."
"natural sine" table on a engineering compass?
"tons of refrigeration"?
( In three phase system ) Whats the difference between line voltage and phase voltage?
(1) Which of these items is most likely to weigh about a gram?
(5sin4t,8cos4t,5t^2 + 16t +3)?
(Electronic circiuts) : When a circuit is not dependent to it's frequency?
(GLASS KILN'S) 240v 40 amp ?
***glass floor in my house what thickness glass do i use***?
***what happens if high tension electric wire break and contact with the sea******?
*I am looking for Ideas* With either an engineering/math degree(bachlors) is it possible to have a job at home
. Explain how the 3to8 decoder can be built using two 2to4 decoder which has active-high enable (E) input and?
[1" pipe] means radius 1" or diameter?
[s there a web site that is purely on the repairs of electrical control systems of generators?
1 Mahcine with 6 Simple Machines?
1)Wtz the diff b/n Electrical grounding n electronic grounding.?
1. Air is moved through 90 deegrees in which of the following fans?
1. Are all Modern X-ray machines produces radio active substance?
1. What energy is used to lift school bag?
1.Explain the difference between the H and P method?
1.Explain the difference between the H and P method?
1.How many sides does a polygon with an interior angle measure of 120 degrees have? Show your work.?
10 HORSE POWER = how many watts?
10 points for the right answer?
1000kg of scrap iron is to be melted using an open electric furnace.?
115,000,000 kWh per year is equivalent to how many KW?
15HP Escalator 20HP elevator name plate specifications?
165 cm is equivalent to how many in terms of feet and inches?
19.5 volts in kilojoules?
1m/3 of lead has a mass of 11,300kg, what is its relative density?
2 houses on 1 meter ittakes 140 sec. for ten revs.of the meter 1 house takes 90 sec.what % is each house topay
2 questions for Statics class.. can someone help? (if you can handle it)?
2 quick questions on HVAC?
2 student get 3 and 3.5 in their class exam And 1.2 and 1.45 in final exam respectively .?
20,000 hz soundwave?
200kva generator. what will be tha maximum load. what are some factors to be consider.?
220 AC versus 120 AC?
220 divided into 1000?
220 divided into 1000?
220 divided into 1000?
24 Gauge Enamel coated magnet wire?
240 (UK) to 110 (US)?
25 million dollar prize for green house gas capture thing?
3 element boiler drum level?
3 factors causing distortion in welding?
3 identical lamps in a parallel accross 300 volt supply and total current is 3 amperes,?
3 lights in series have resistances of 3,5,7, operate on a 9v battery what is the current in the system?
3 phase 480 volts in each wire?
3 phase electricity?
3 storey building i want to install mains operated with battery back smoke heat detectors?
3 types of levers?
3 years diploma in ECE from Delhi is equivalent to 10+2 in regards to appear in IEEE, JEE can I appear?.?
3" pipe lenth 20 ft how is volume of water in it?
3=7(k-4), solve for k?
32 scale ruler.?
3D vector analysis?
4 car batteries in series and need 3mps current to melt metal.?
4.What are some procedures for safety in the laboratory?
4093 Schmitt Nand?
-40F = -40C At what other temperatures are they the same?
4x4x4x4x4 as a power of 4?
5 ways of increasing the capacity of a cellular system?
50 cwts = how many tons?
6 Stroke IC Engine. Heard news that few engg. students in India developed this type of IC engine?
6.4 x 8.741= show in significant figures?
67 Watts Of Power How Long To Charge 12 Volt 600 amp battery?
8. In European countries, the normal line voltage is 240 V. If a?
8.Explain how you could use dynamic frequency analysis for a time related problem.?
800kva is equal to how many amps?
87.4 ml of milk at 18.6oC are added to 470.5 ml of coffee at 94.3oC?
9-11 engineering question. Why do we need demolition crews for buildings?
911. Why did the building collapes?
A = integral of [x * dirac_delta(t-4) dt] from -infinity to +infinity?
a 120-v circuit contains a load with a resistance of 15ohms.What resistance must be added in parallel with the
A 1-mile long copper wire has a resistence of 10 ohms. Whats will be its new resistence when it is shortened b
A 2 story garage 30'*26' The 2nd floor supported by a steel beam how big will it need to be @ the 30' span
A 24 volt battery is connected to 4 lamps (all joined in series) What is the voltage rating of the lamps?
A 24volt AC transformer rated at 20 va, How many amps is it suppling?
A 40 kilo stone broken into 4 different pcs. with this 4 pcs u can have any weight betw. 1 & 40. Find it?
A 5400 ohm resistor is rated at 1.5watts.what is the maximum safe working current?
a 75kva ,3 ph. 460v ac primary down to 208v ac secondary.?
A amplifier with negative feedback?
A ball is travelling with a speed of 35m/s when it make contact with a wall. (question continues in detail)?
a baterry has 6 cells.each with internal resistance?
A bedroom is 10 ft by 11 ft. How much baseboard is needed to go around the room?
A block of unknown metal measures 10cmx10cmx3cm. The block has a mass of 760grams..what is the density?
A boat floats in water on a bridge. Do the supports have to be stronger than if there were no boat?
a buttterfly at eye level is 17cm infront of a plane mirror. you are behind the butterfly, 50cm from the mirro
A cable to the top of a tower makes an angle of 35 degrees with the level ground. At a point 100 yards closer?
A car is hauling a 90-kg trailer, to which it is connected by a spring. The spring constant is 2400 N/m. The c
a car moving at 20m/s slows to a stop in 6.5 seconds. What was the cars acceleration?
A certain light bulb with a resistence of 95 ohms is labeled 150 W. Was this bulb designed for use in a 120 V?
a circuit has a current of 10.0A. Calculate the number of electrons that pass in the circuit in 1s?
a conductor that's described as a 750 MCM wire has an area of whar?