Engineering

Gain, in the common emitter amplifier, is beta (hFe) or collector resistance divided by emitter resistance, whichever is less. Substituting a different beta (hFe) transistor will affect gain, if hFe is less, or increase stability and design margin, if hFe is greater.

you were wearing photochromatic sunglasses then you would not have had to take off and then put on your sunglasses. The lenses would have reacted to the change in light conditions and would keep your eyes well protected throughout your journey.

A photochromatic lens will only alter in the area subjected to change in light, therefore if only one part of peripheral vision is subjected to an increase in light intensity then only that part will change. Every area of the lens is fully independent from all other areas.

Uzi has a high fire rate, and Mac has more accuracy but less fire rate

Because they have a steady customer stream ! The shops sell the handsets.. and supply all sorts of accessories, batteries, cases etc.

It's called a deflection coil. If a c.r.t. uses magnetic deflection, there will be two deflection coils, a horizontal one and a vertical one.

Current is rate of flow of charge, so 1 ampere = 1 coulomb per second.

As ampere and seconds are both fundamental units (and coulomb is derived), a coulomb has the dimensions [current][time] i.e. As

it depends of site condition

No, it is a device for setting torque.

Bridge Designers

In medicine, it used to be used for foot fungus, but has long since been superseded by better procedures. It is also the agent used in older home water treatment systems for removal of iron from the water. I'm sure it probably has other uses, too.

obstacles, like towns, roads, and mountains. how do you get past them? what is the least disruptive way to the people and environment?

The sound actually emanates from breaking atomic bonds, and the subsequent rearrangement of the crystalline matrix within grains. This change occurs so quickly, that the material produces a pressure wave (sound wave) that you can hear as a popping sound.

Pretty cool, huh!?

Source: B.S. in Material Science and Engineering from The Georgia Institute of Technology

Submarine simulators have been around for decades. Though primarily used in Submarine School in Groton, CT, to train new submariners, they're also used for submarine veterans in pre-deployment training exercises.

The 2 most common are the dive simulator and everyone's favorite, the wet trainer. The dive simulator simulates a submarine control room, with helm, planes, and ballast control panel stations. The trainer is used to give candidates a hands on experience of dealing with emergencies, without the side-effect of dying. Since the Helm/Planesman stations are the first that most crew qualify on, it's the logical choice for a trainer.

Submarine control room trainers for officers are more complex, as they're taught advanced submarine command, control, and tracking/attack procedures.

The wet trainer is exactly what it implies; it is a simulated room of the engineering spaces of a submarine where pressurized water pipes and manifolds with leaks are activated, and the participants work the simulated emergency. The trainer is designed to prepare crews to deal with pressurized water leaks, rising water, and pipe-patching/flood control procedures. In submarine school, it's also a psychological evaluation to see how potential candidates fare in an emergency situation in a closed environment where water is rising.

For pre-deployment training, simulators can help train crews for specific mission tasks, or refresh/hone target acquisition and tracking skills between the key personnel involved during battlestations.

The 8085 has five interrupts, INTR, RST5.5, RST6.5, RST7.5, and TRAP. It also has eight software interrupts, RST0, RST1, ..., RST7.

The INTR interrupt requires a hardware response that is an opcode. Usually, the opcode is either a CALL instruction, in which case the interrupt vector can go anywhere in memory, or it is an RST instruction, in which case the vector is based on a table in low memory.

In the case of RST instructions, either directly or via INTR, or the RSTx.5 interrupts, you simply multiply the interrupt number by 8 to get the vector address. The following table presents the vector addresses for all possible interrupts...

RST 0 - 00H

RST 1 - 08H

RST 2 - 10H

RST 3 - 18H

RST 4 - 20H

TRAP - 24H

RST 5 - 28H

RST5.5 - 2CH

RST 6 - 30H

RST 6.5 - 34H

RST 7 - 38H

RST 7.5 - 3CH

Depends on the amount of fuel remaining. Usually at 78% and at 780 Degrees, A Reactor requires 480 Kilo Litres of Coolant [Water] per Day.

Very simply, more fuel burned, more power output. This applies to any combustion engine.

Most complex engineering problems cannot be solved without calculus. Force related problems are a great example - how else would you calculate the force exerted on a particle a specific distance from an electrically charged wire?

Many network engineers consider MEGACO to be superior to MGCP.

(Source: Network+ Guide to Networks, page 552)

Levels of Conceptual Interoperability Model

Genetic engineering can help farmers be more productive by making plants that withstand herbicides and pesticides, have shorter growing seasons, and are more hearty. However, studies have not been fully conclusive on the dangers of genetically altered food supplies.

they are all the same, the only way to get dimensions is to go to your favorite truck's website.

Pigging is when a tight fitting (but not sticking!) plug (the pig) is inserted into a pipe, and then made to travel down the pipe by applying pressure to the pipe behind the pig. Pigs can be used to clean and inspect the pipe, and also to separate different batches of material from each other.

60 represents the 60000 psi tensile strength; just need to add three zero.

The third number represents the welding position; number 1 represents all positions.

The last number represents the type of arc; 3 represents medium to shallow penetration ac/dcrp.

I do not think that there is any difference. Petroleum engineers normally inject water into an oil reservoir to maintain the reservoir pressure (and hence the ability of the reservoir to pump oil to the surface). In the process and if the water injection wells are properly located, the injected water normally sweeps (pushes out) out more oil effectively flooding the reservoir and increasing the amount of oil that is recovered from the reservoir. This incremental oil will otherwise be left behind in the reservoir. Hence, in an oil reservoir where the natural aquifer is large and strong enough to maintain the reservoir pressure, water injection is unlikely to significantly increase the oil recovery from the reservoir.