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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
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
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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.
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
The light ray will bend towards the major axis, aiming for the focal point.
The limitation of Error Backpropagation Algorithm and its Application?
The gradient descent algorithm is generally very slow because it requires small learning rates for stable learning. The momentum variation is usually faster than simple gradient descent, because it allows higher learning rates while maintaining stability, but it is still too slow for many practical applications. These two methods are normally used only when incremental training is desired. You would normally use Levenberg-Marquardt training for small and medium size networks, if you have enough memory available. If memory is a problem, then there are a variety of other fast algorithms available. For large networks you will probably want to use trainscg or trainrp.
Multilayered networks are capable of performing just about any linear or nonlinear computation, and can approximate any reasonable function arbitrarily well. Such networks overcome the problems associated with the perceptron and linear networks. However, while the network being trained might theoretically be capable of performing correctly, backpropagation and its variations might not always find a solution
Define tender and types of tender?
There are three types of tendering methods used in construction industry!
1. Open Tendering
2. Selective Tendering
3. Negotiated Tendering.
Open tender is an arrangement where an advertisement in local newspapers or trade journals invites contractors to apply for tender documents.
A deposit is usually required to ensure that only serious offers are made;
Presumably it is needed to cover the cost of copying the documents. Local authorities have been advised against open tendering because it often leads to excessive tender lists where the cost of abortive tendering is considerable. There are instances of selection criteria being applied after the tender has been submitted, so a bid could be rejected if a contractor does not belong to an approved trade association.
Advantages of Open Tender
The main advantage of such tendering is as follow:
- Give high level of competition and contractors tend to give best prices as compare to other tendering method
- There is no list of restrictive tenderer, which does not allow favoritism
- It is very transparent process which ensures that only the contractor with the best price and meeting all the technical requirements will win the tender.
- This process is usually manage by procurement board where its staff are trained for such exercises and board ensure that all the procedures involved in tender are followed.
Disadvantages of Open Tender
The low price usually detriment of quality and often result in the client obtaining poor quality job and late completion of work.
Given that its open tender and thus there are no restrictions on the number of contractor who can bid and become bulky and lengthy job for tender analyses which often result in delays and high cost.
Selective tender: Selective tendering consists of drawing up a list of chosen firms and asking them to tender. It is by far the most common arrangement because it allows price to be the deciding criterion; all other selection factors will have been dealt with at the pre-qualification stage. There are three ways in which selective tendering lists are drawn up:
- An advertisement may produce several interested contractors and suitable Firms are selected to tender.
- The consultants may contact those they would wish to put on an ad-hoc list.
- Many local authorities and national bodies keep approved lists of contractors in certain categories, such as work type and cost range. Contractors who ask to be included on select lists of tenderer are usually asked to provide information about their financial and technical performance, particularly about the type of work under consideration. The National Joint Consultative Committee for Building (NJCC) has written the 'Standard form of tendering questionnaire - private edition' so contractors can prepare answers to relevant questions in advance. The questions mainly deal with projects carried out during the previous three years. Once the form has been completed, it can be used for specific projects or for those compiling lists of selected contractors.
Ngotiated Tender :under this method normally one contractor is approached and such tender mainly used for specialist work such as lift system or airport project at big level, in such case there are limited number of contractor who do such work in the market .it is based on one-to-one discussion with contractors to negotiated the terms of contract
