Electrical Engineering

A 6 X 12 will hold more weight than a 4 X 8 of the same material because there is more surface area. Concrete strength is measured in psi, so a larger cylinder = more square inches = more pounds.

A flashlight is an example of a series circuit; a battery in series with a switch in series with a bulb.

In Short circuit test High Voltage side is feeded with 2-5% of the High Voltage rating to circulate approximately full load current in low voltage winding by short circuiting it. Low voltage is generally short circuited to facilitate measurements because it is more difficult to measure the quantities at high voltages.

1. Basic salary is 13600( with 3% increment every year. up to 25420)

2. DA is 43% (as on 1-1-2011)

3. HRA 10/20/30% depending up on where they getting postings.

4. plus allowances like Rural, Medical, Special pay, Skill up gradation allowance, Travelling Allowance.

This is gross salary. (Around 22000 with 10% HRA)

And the deductions

1. EPF

2. GSLIS

3. Professional tax - 200 Rs

4. Income tax

5. Ben F - (Around 10 Rs)

and any insurance of the employee which is to be deducted from salary

We don't use an 'instrument' to covert a.c. to d.c.. Rather, we use a circuit called a 'rectifier'.

Heating is caused by current flow. Certain types of wire like tungsten emit more heat than other types. Lower resistance means higher current for a fixed voltage per Ohm's Law. So the efficiency of heating with electricity depends on the material of the conductor, the operating voltage and the resulting current. In most instances this will be a low resistance with high conductivity.

no only ac,

im a science and math professsor

motor works on the principle of mutual induction.

All of it!

A VCR runs on normal home voltage (120 volts). The voltage drop through the VCR is equivalent to the home voltage.

If you're requesting how much power the VCR uses, this is depended on the the VCR - make, model; and whatever the VCR is doing (playing? rewinding? sitting idle? paused? etc.).

The best way to find out is to buy a simple power meter. these are available for about 20 bucks.

ANSWER: SCR does not run or use home voltage. The SCR can control the load power that is where the usage is. To run a fan at different speed to dim the lights and so fourth.

It is a 4 layer diode the current passing trough to the load is the only consideration of the device requirements.

Pora po inka nuvventi cheppedi

0.5 to 06

Air insulated substation means air acts as the dielectric medium but in case of gas insulated substation SF6 is the dielectric medium. Gas insulated substations are having more advantages than air insulated substations.

Because the RPM remains same

There is no difference between PCC ( Power Control Centre) and PDB (Power Distribution Board). Although they have different names, but their functions are same i.e. controlling power feeders.

A: YES it can to a point but as speed of surges increases the capacitor will start to behave like a coil

There a variety of sites that provide that service online, some require downloading and some of them don't need downloading they just give you the free nickname in a short time, if the nickname isn't to your liking you can always create your own nickname that matches your personality.

ohms

Why not?

AC motors are usually run at constant and DC motors at veriable speeds.

Simply ac or dc motor type should not have any effect on bearings & grease.

Bearing type, operating temperatures, speed, load, duty etc. determine the suitable type of grease and regreasing intervals.

Most of the times motor manufacturers give the info on motor name plate if the motor bearings require regreasing. It is adviseable to always refer to motor or bearing manufacturer recommendations.

Shell Alvania RL3 is suitable for medium size motors (with ball bearings) running at 40C ambient temperatures.

Cheers,

Syed

If the generator is to maintain the same rpm and power output, then a heavier load will increase the diesel consumption.

The revolutions per minute the generator runs will increase as the load increases, thereby resulting in an increase in diesel consumption to maintain the high rpm.

A Generator has a governor which attempts to maintain frequency at 60 Hz for North America. For the generator to increase the power output at the same frequency, the governor will increase the fuel and air to the engine. The fuel consumption will not be linear because of the curves associated with the particular engine. The fuel to KWH is know as the heat rate curve for the generator.

A Honeywell generator is a power generator manufactured by a company called Honeywell. They manufacture portable and inverter generators suitable for home or business requirements.

In an emergency and for a short period of time you can single phase a three phase motor but the motor will be loud, have terrible power characteristics and depending upon the use will burn up rather quickly. You should never try to run this in other than a life threatening emergency situation, the motors are not designed for it. Normally you don't.

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A three phase motor will not start on single phase. If the motor was started on three phase and loses a phase, it will stay running at a lower percentage of efficiency. Now a days the motor protection will not let a three phase motor run in a single phasing condition. All three phase legs of the motor are monitored and in a single phase condition the other two legs of the motor draw a higher current. This higher current is sensed by the motor's overload heaters in the motor's contactor and take the motor off line by opening the motor contactor.

Now to the question, any two legs of a three phase system in electrical terms is known as single phase. As long as the three phase voltage matches the voltage needed in the single phase power diagram it can be connected to operate single phase equipment.

In many typical installations, it is used in strain gauges.