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Why is reverse power protection required in units like signal generators?
Wiki User
∙ 13y ago
Results of Motorization of a Generator
If a generator loses prime mover power, it acts as a motor with a DC field on the rotor
The DC field will cause the rotor to try and follow the AC field in the same direction as before
If the mechanical drag on the rotor is heavy, it will fall behind and "slip poles,"inducing a large voltage into the rotor; this can cause insulation breakdown of the windings, flashover at the brushes, and violent shaking of the generator mountings.
If a generator loses DC excitation to the rotor it will not generate, but the prime mover power will still turn the rotor
Now the generator acts as a motor running at no load
Wiki User
∙ 13y ago
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What is the signal range for a multimeter oscilloscopes and signal generators.?
There are many different ranges, depending on the type (and expense) of the equipment involved. The range will be printed in the specifications for the device.
What is inter trip relay?
A protection signalling system whereby a signal initiated at one station trips a circuit-breaker at another station.
How relay used for protection purpose?
Relay are operated by small current /voltage connected to Secondary side of Current Transformer and /or Voltage Transformer. The signal stimulates the magnetic substance nearby with the attracting force. This closes or opens the circuit being used in protection purpose.
Why is modulation necessary before multiplexing?
modulation means transmitting the signal which is to be transmitted along with the carrier wave, then at the receiver it is separated from the carrier and demodulated. So modulation is needed so as to transmit the signal over long distances with higher accuracy. Hence it is required before multiplexing.
What is transfer trip protection scheme?
A scheme where a signal is sent to to a remote location to cause a trip. An example could be a breaker failure scheme. When the breaker is told to trip, and fails to do so, fiber communications could be used to transmit a trip signal from the local substation to the substation the next bus out to cause that breaker to trip.
What are some other common names for signal generators?
There are a number of alternative names that are commonly used for signal generators. They are often referred to as pitch generators, function generators, and arbitrary waveform generators, for example.
When is flag flown in reverse?
It is flown in reverse to signal distress.
What color is the reverse signal wire?
Light Green
What is the signal range for a multimeter oscilloscopes and signal generators.?
There are many different ranges, depending on the type (and expense) of the equipment involved. The range will be printed in the specifications for the device.
What components provides the computer with a signal that helps determines the generators engine firing order?
the crankshaft sensor
What effect will increasing the required transmission distance have on transmitting the signal clearly?
Increasing the required transmission distance of a signal will have a negative effect on the clearness of the signal. As the source is moved farther away from the receiver, a weaker signal will be present.
What are oscillators used for?
Signal generators: reference (tuning equipment) source - such as electronic keyboards beat frequencies - as in a superheterodyne radio
What equipment is required to be on at trailer?
signal lights
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switch on the transmission which sends a signal to the reverse lights when shift is in reverse......... is shot. You need a mechanic.
How do you fix a broken turn signal on a 1995 Corsica?
Remove the turn signal retaining screws. Remove the wiring harness. The turn signal will come off. Reverse the process to install the new turn signal.
How do a change a rear blinker to a Chevy silveraldo?
Answer : unscrew the signal lens and remove the signal bulb and replace with 1157 bulb reverse process
Is there a minimum pulse width required for the interrupt signal?
no
