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What does Incoming and running generators are in same phase while paralleling two generators mean?
When two generators are to be run in parallel, one generator is first started and some load is given. Then second generator is brought in parallel with the running generator (subject few conditions, like voltage, frequency, phase angle). First generator which is running is known as running generator, the second generator which gets connected is known as incoming generator
What condition must be met to synchronize an alternator to an existing three-phase power line?
1.The effective voltages of the incoming generator must be exactly equal to that of the others or of the bus bars connecting them.2.The phase rotation or sequence of the running and incoming generators must be same.3. The frequency should be same.
What are the conditions in parallel operation of generator?
the operation of connecting an alternator with other alternator or with common bus-bars is known as synchronizing.Generally alternator used in power system where they are connected in parallel with other alternator.condition for parallel operation of an alternator1. The terminal voltage of incoming alternator must be same as the bus-bars voltage.2. The speed of incoming alternator must be such that its frequency f =pn/120 as the same frequency of the bus-bars.3. The voltage of incoming alternator and the bus-bars voltage are in same phage.
Circuit for single tuned amplifier?
A single tuned amplifier basically consists of a tuned circuit (which may consist of an IFT or a parallel tuned LC circuit) connected to the collector of an amplifier circuit (in Common Emitter configuration). The tuned circuit is designed to get a resonant frequency equal to the incoming frequency signal that arrives at the base. The Single Tuned Amplifier gives maximum amplification to that particular incoming frequency which matches the resonant frequency of the tuned circuit and attenuates all other frequencies. Thus it gives sharp selectivity with a high Q-factor.
What is intermediate frequency?
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. [1] The intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a process calledheterodyning, resulting in a signal at the difference or beat frequency. Intermediate frequencies are used in superheterodyne radio receivers, in which an incoming signal is shifted to an IF for amplification before final detection is done. The intermediate frequency stays the same for all signals, for example 455 kHz in an AM broadcast receiver.Conversion to an intermediate frequency is useful for several reasons. When several stages of filters are used, they can all be set to a fixed frequency, which makes them easier to build and to tune. Lower frequency transistors generally have higher gains so fewer stages are required. It's easier to make sharply selective filters at lower fixed frequencies.
What does Incoming and running generators are in same phase while paralleling two generators mean?
When two generators are to be run in parallel, one generator is first started and some load is given. Then second generator is brought in parallel with the running generator (subject few conditions, like voltage, frequency, phase angle). First generator which is running is known as running generator, the second generator which gets connected is known as incoming generator
How does the the frequency of a reflected wave compared to the frequency of a incoming wave?
It is double of the incoming wave.
What condition must be met to synchronize an alternator to an existing three-phase power line?
1.The effective voltages of the incoming generator must be exactly equal to that of the others or of the bus bars connecting them.2.The phase rotation or sequence of the running and incoming generators must be same.3. The frequency should be same.
What are the conditions in parallel operation of generator?
the operation of connecting an alternator with other alternator or with common bus-bars is known as synchronizing.Generally alternator used in power system where they are connected in parallel with other alternator.condition for parallel operation of an alternator1. The terminal voltage of incoming alternator must be same as the bus-bars voltage.2. The speed of incoming alternator must be such that its frequency f =pn/120 as the same frequency of the bus-bars.3. The voltage of incoming alternator and the bus-bars voltage are in same phage.
What is the use of local oscillator?
Trasmitting stations have their own transmitting frequency. No one can construct an amplifier which amplifies signals over a wide range. So every transmitting frequency has to be changed to one particular frequency. This is known as INTERMEDIATE frequency (IF) This is quite possible by getting beats. So a signal is to generated whose frequency is just more than the incoming frequency by IF This signal is named as local singnal which is generated by the LOCAL oscillator.
The formation of standing wave requires?
interference between the incoming and reflected waves of the same frequency
How does the incident frequency compare to the reflected frequency?
Incident frequency is the original frequency of an incoming wave, while reflected frequency is the frequency of the wave that is bounced back after hitting a boundary. In general, the incident frequency is the same as the reflected frequency because the wave retains its original frequency upon reflection, assuming no frequency changes occur due to the medium.
How does the frequency of a reflected wave compare to the frequency of the incoming wave?
The ' E ' field vector of an electromagnetic wave is reversed upon reflection."Polarizing" material doesn't distinguish between the positive and negativeexcursions of the E field, so the flip at the reflecting surface isn't apparent.It enters into the geometry of interference that's due to the combination ofa direct signal and a reflection of the same one.
When an incoming combines with reflected wave in such a way that the combined wave appears to be standing still the result is a?
Standing wave. This occurs when the frequency of the incoming wave matches the frequency of the reflected wave, leading to constructive interference at specific points called nodes and antinodes.
How does frequency mixing take place in radio receiver?
The incoming frequency is fed to a transformer ( or IC chip). Another frequency is fed to that same place. The sums and differences are output. Differences are rectified to recover the modulated info.
Why does the synchroscope need to be rotating clockwise if it is turning slowly counterclockwise won't that work the same?
because the incoming generator has be connected as a source and not a load to the grid. if the frequency of the incoming generator is lower than the grid frequency then ... it will behave as a motor drawing power from the grid and generator will trip in reverse power protection.
Why absorption happen in incomming light?
In absorption, the frequency of the incoming light wave is at or near the energy levels of the electrons in the matter.
