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What is an extinction angle of phase controlled rectifiers?
Extinction angle of a rectifier (γ): Also used in connection with a controlled rectifier. It refers to the time interval from the instant when the current through an outgoing thyristor becomes zero (and a negative voltage applied across it) to the instant when a positive voltage is reapplied. It is expressed in radians by multiplying the time interval with the input supply frequency (ω) in rad/sec. The extinction time (γ/ω) should be larger than the turn off time of the thyristor to avoid commutation failure.
Can you put a larger CPU in a computer rather than the original smaller CPU that it came with?
If the CPU replacement is physically larger - probably not.
What do you mean by DC forward voltage?
DC forward voltage is generally related to diodes. It means the voltage across the diode when the diode is forward biased, i.e. when the anode is more positive than the cathode. The forward voltage is the drop across the diode. The amount of drop is a function of current. For typical silicon diodes, the forward voltage drop ranges from 0.6 volts for very small currents, to 1.5 or more volts for large currents.
What are the Advantages and disadvantages of IC voltage regulator?
IC voltage regulator performs better than any analog voltage regulator. Some IC regulators IC no. are given below- Positive IC voltage regulator- 78xx Negative IC voltage regulator-79xx where xx varies according to the use of ICs raring. as 7805 gives the positive 5 Volt & 7905 gives the negative 5 volt.
What band is low voltage in is it band?
The text of the question doesn't make sense, but low voltage is anything below 60 volts, except in terms of power transmission, in which case its anything less than 600 volts.
Can voltage across an element be greater than the applied voltage in an ac circuit?
Yes, if there is a step up coil in the circuit. Coils can change voltage and amps in any given circuit. If the voltage is increased, than the amperage is decreased (or vice versa). This is how an ignition coil in a car works. A 14 volt auto electrical system can have 1000 volts across the spark plugs. Without a coil, I know of no other way voltage in any part of a circuit can be higher than applied voltage. A 1000V? TRY 30 KV TO 40 KV @80-100MW
Why do the voltage drops of an inductor and a lamp in a series ac circuit not equal the applied voltage?
The voltage is greater than the applied voltage, why?
What is the difference between a secondary and primary coil?
The primary coil is the one with voltage applied, or the 'input'. The secondary coil is the one in which a voltage is induced by electromagnetism, or the 'output'. In a step up transformer, the secondary coil voltage is higher than the primary. In a step down transformer, the secondary coil voltage is lower than the primary. In an isolation transformer, the secondary coil voltage is the same as the primary. Here, the point of the transformer isn't to raise or lower voltage, but to keep a particular circuit electrically disconnected from another circuit, while still allowing the circuits to function together (through electromagnetism).
How does a step up and step down transformer work?
Transformers rated 1 KVA and larger single phase,3 KVA and larger three phase can be reverse connected without any adverse effects or loss in KVA capacity. The reason for this limitation in KVA size is, the turns ratio is the same as the voltage ratio. On transformers rated below 1 KVA single phase, there is a turns ratio compensation on the low voltage winding. This means the low voltage winding has a greater voltage than the name plate voltage indicates at no load. Terminals on a single wound transformer, primary side are labeled H1,and H2 and on the secondary side X1 and X2. Just reverse the input voltage to the X1 and X2 terminals and the take the load off of the H1 and H2 side.
Does a weak battery voltage affect the voltage output of the ignition coil?
Ignition Coil Output Voltage versus a Weak BatteryYes, an ignition coil is nothing more than a dedicated, specialized transformer. As such, the lower the voltage in the primary winding, then the lower the voltage induced in the secondary [output] winding.
What are step up transformers?
A transformer is a device that changes (transforms) and alternating potential difference (voltage) from one value to another value be it smaller or greater using the principle of electromagnetic induction. <a class="h2heading h2" style="color: rgb(0, 0, 0);" name="Step-up Transformer:">Step-up Transformer:</a> On a step-up transformer there are more turns on the secondary coil than the primary coil. The induced voltage across the secondary coil is greater than the applied voltage across the primary coil or in other words the voltage has been "stepped-up."
In watt meter why pressure coil has more turn than current coil?
In an analog induction type wattmeter the pressure coil is connected accross the voltage source.It is intentionally made to have a larger number of turns than the current coil so that it's impedence increases and it draws minimum current from the circuit; causing lesser error in the reading.
In a solenoid valve system if the voltage on the coil is 118 VAC and a continuity test of the solenoid and coil measures 80 ohms yet the solenoid will not allow water flow the most likely cause of?
There could be more than one reasons. Applied voltage may not be 118 volts. Solenoid valve may have been stuck mechanically. Solenoid coil could be faulty, partially short.
Can the terminal voltage of a battery be larger than its emf?
the voltage of a battery could be larger than the emf if you are to charge the battery, in that case V=E+Ir .
Does a car battery have smaller or larger voltage than a flashlight battery has?
Larger.
What will happen if current is more than required in diode?
If the applied voltage is greater than maximum forward voltage, the diode will get damaged..
What happens to the brightness of a bulb if the volts are increased?
The electrical potential energy increases as the voltage is increased. It further excites the filament in the bulb more than a lessor voltage would. Using good old ohm's law (Voltage = Current x Resistance), a larger voltage applied to a bulb at the same resistance increases the current proportionally and larger currents has the effect to cause higher temps in conductors
