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Engineering
Engineering is an art and profession devoted to designing, constructing, and operating the structures, machines, and other devices of industry and everyday life.
5,839 Questions
Why is CO2 unsuitable for electric fire?
You are wrong, CO2 is particularly used to extinguish electrical fires.
According to the EPA:
(...) some of the types of hazards and equipment that carbon dioxide systems protect are "flammable liquid materials; electrical hazards, such as transformers, switches, circuit breakers, rotating equipment, and electronic equipment (....)
and they also mention the reason:
Carbon dioxide is the most commonly used "inert" gas extinguishing agent, followed by nitrogen (Friedman 1992) (...) Carbon dioxide fire extinguishing systems are useful in protecting against fire hazards when an inert, electrically nonconductive, three-dimensional gas is essential or desirable and where clean up from the agent must be minimal (...)
1) Decide on a position for the vectors; for example, place one of them along the x-axis (from left to right).
2) Making a drawing is sort of optional, but it helps visualize the problem. This might save you from making mistakes.
3) Convert both vectors to rectangular coordinates. The polar-->rectangular conversion, available on most scientific calculators, can help a lot with this.
4) Add the x-coordinate and the y-coordinate of both vectors separately.
5) Convert to polar coordinates (once again, using the corresponding function on your scientific calculator). One of the numbers given, in polar coordinates, is the magnitude of the vector; the other is the angle.
What is the difference between Breaking Strength and Modulus of Rupture (ceramic tile)?
The modulus of rupture is the same as the breaking strength. It is a term used for ceramics where strength is dependent upon statistical distribution of flaw size, flaw shape, and moisture.
What is the difference in candela seconds and candelas second?
I assume you mean candela seconds vs candelas per second. The first is derived by multiplying candelas by time, the second is achieved by dividing candelas by time
"http://wiki.answers.com/Q/Explain_with_example_how_charts_are_used_in_analysis_Also_explain_the_different_types_of_charts_available_in_Excel"
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How many gauge glasses on large boiler?
Steam would have a gauge 0-15
Hot water Tri indicator Temperature /pressure /altitude
How much did the Tacoma Narrows Bridge cost?
Paper is made from trees (wood).Wood is Natural but they have processed the wood and made paper. Therefore it is man-made.
What do you mean by category 1 and category 2 in miniratna psu?
The Basic difference between a Category I & Category II Mini Ratna Company is that a category II mini ratna company can make a capital expenditure of Rs 250 crore or 50% of the net worth, whichever is less, without seeking the permission of the government. On the contrary, the board of category I mini ratna company can make a capital expenditure of Rs 500 crore or 100% of its net worth, whichever is less, on its own."
Similarly, the board of a category I mini ratna company can take an independent decision to invest Rs 500 crore in joint ventures and subsidiaries. For category II mini ratnas, the investment limit has been capped at Rs 250 crore.
Self check is a collection of tests built into a device that it automatically performs on itself to verify that it is functioning correctly.
There are 3 main types of self check: startup self check, periodic self check, and initiated self check.
- startup self check - runs automatically when the device is turned on and can test parts of the device that could not be tested once it is fully running normally
- periodic self check - runs automatically in the background on a periodic schedule
- initiated self check - runs when requested by the user or a technician and can test user interfaces in an interactive mode that cannot be tested in the other 2 types of self check
Sometimes self check is called built in test (BIT) and the 3 types are SBIT, PBIT, and IBIT respectively.
What do vaulted and domed buildings have in common with Hoover Dam?
a curved surface to resist a load. all three are examples of an arch
What assembly language directive indicates the start of the code segment?
The "ORG" (for "origin") statement indicates the start of the code segment.
Many assembly language source files start with "ORG 0", indicating that instructions begin at address 0.
Many other assembly language source files, such as COM files, start with "ORG 0x100", indicating that instructions begin at address 0x100.
The light ray will bend towards the major axis, aiming for the focal point.
What is mean by principal of virtual work for deflection?
this is also called the unit load method. It involves determining the moment distribution of various sections of a beam when the applied loads are acting, the applying a virtual unit load at the point where the deflection is to be found. With the arbitrary unit load acting, the moment distribution in the respective sections is obtained and the value of the deflection got by summing up (integrating) the product of the two moments and divided by the section properties ie modulus of elasticity and the second moment of the area of the section
