Electrical Engineering

from the name itself the common collector has its collector terminal in common with both the input and output circuits of a transistor and the base current is chosen as the input current and the output current is the emitter current

Power is supplied to the governor from the engine's output shaft by a belt or chain connected to the lower belt wheel. The governor is connected to a throttle valve that regulates the flow of working fluid supplying the prime mover. As the speed of the prime mover increases, the central spindle of the governor rotates at a faster rate and the kinetic energy of the balls increases. This allows the two masses on lever arms to move outwards and upwards against gravity. If the motion goes far enough, this motion causes the lever arms to pull down on a thrust bearing, which moves a beam linkage, which reduces the aperture of a throttle valve. The rate of working-fluid entering the cylinder is thus reduced and the speed of the prime mover is controlled, preventing over-speeding.

The starting current of a motor is usually much higher than the normal current of that motor's full load condition. So for the protection purpose, in case of selecting fuse, the fuse has to be rated 2-3 times the full load of the motor so it does not blow on start. An induction motor will have a starting current of around 6 times FLC.

no

inversely proportional relationship

A: The log book intent is to provide a history of events and people entry in case there is a later problem somehow the history can be analyzed to provide an answer quickly as opposed to searching for phantom problems

A: DEFINITELY NOT Open loop is defined as no feedback. any kind of negative feedback will reduce the gain

A: TRIAC will break over and conduct at a certain if a certain voltage is reached. That voltage depends on all different triacs devices

An ampere is the unit of (electrical) current.

Johnny 5

The point where wires interconnect with other wires is known as a "junction".

In your panel the circuit breakers are connected to the buss, each circuit breaker feeds a different circuit. Different circuits are not connected together.

find current throrgh RL by using menemims

It usually depends from one vendor to another. However in general, most vendors perform below tests as routine tests:

1- No load current

2- Open circuit

3- No load speed

4- Locked rotor

5- Winding resistance

etc.

C. collet

Presently, there are six known methods for producing a voltage or electromotive force (emf). Some of these methods are more widely used than others, and some are used mostly for specific applications. Following is a list of the six known methods of producing a voltage.

1. FRICTION - Voltage produced by rubbing certain materials together.

2. PRESSURE (piezoelectricity) - Voltage produced by squeezing crystals of certain substances.

3. HEAT (thermoelectricity) - Voltage produced by heating the joint (junction) where two unlike metals are joined.

4. LIGHT (photoelectricity) - Voltage produced by light striking photosensitive (light sensitive) substances.

5. CHEMICAL ACTION - Voltage produced by chemical reaction in a battery cell.

6. MAGNETISM - Voltage produced in a conductor when the conductor moves through a magnetic field, or a magnetic field moves through the conductor in such a manner as to cut the magnetic lines of force of the field.

The rating is about 1500W. This is for both the input and the output. Output voltage is usually 2,000 volts. Divide watts by input volts to get input current. And divide watts by output voltage to get output current. -Joe

Yes, it has a high resistance as it is an insulator.

when a dc motor armature current is fluctuated in a range then it is call hunting in a d.c motor.

As the number of bulbs in a series circuit increases, the current decreases. As the number of bulbs in a parallel circuit increases, the current increases.

Very carefully, and with practice. There is some equipment that is helpful such as special needle nose pliers, tweezers, clamps, solder removers, etc.

It works on DC only

It consist a permanent magnet coil.

Yes

Slang for come on me.

transistor either increase or decrease current bt capacitor stores the energy

Capacitors are said to be connected together "in series" when they are effectively "daisy chained" together in a single line. The charging current ( iC ) flowing through the capacitors is THE SAME for all capacitors as it only has one path to follow.

Then, Capacitors in Series all have the same current flowing through them as iT = i1 = i2 = i3 etc.

Therefore each capacitor will store the same amount of electrical charge, Q on its plates regardless of its capacitance. This is because the charge stored by a plate of any one capacitor must have come from the plate of its adjacent capacitor. Therefore, capacitors connected together in series must have the same charge.

QT = Q1 = Q2 = Q3 , etc.