I assume you mean - 'Why does a circuit fail to work if the operating voltage is too high or too low?' A certain specific voltage is needed to overcome the natural resistance in circuit components. For instance in simple transistors, this is 0.7V to get the transistor to switch on and 1.4V is lost across the switched junction. This is why may circuits operate at above 3V. The rest of the circuit is designed to operate at the specified voltage and if you go too high, too much current will flow through the circuit and it will fail in the same way a fuse will blow if too much current is passed through it.
Through a relay or some other kind of high voltage switching device.
In this case current flows from a high voltage to a lower voltage in a circuit.
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.
A high current flows through a short circuit even if there is no voltage change because the resistance across the short circuit is zero.
lighting is usually on 15A breakers receptacles on 20A the probability is high that they are not on the same circuit. if they are the same circuit the probability is high that there hasn't been an electrical inspection
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Through a relay or some other kind of high voltage switching device.
In this case current flows from a high voltage to a lower voltage in a circuit.
That depends on what you mean. If you mean why does a circuit which has a high voltage side and a low voltage side have a greater average current on the low voltage side, it is probably because of power conservation: P = IV. If this is not what you mean, you will have to be more specific!
The function of a choke in a lamp circuit is to produce high voltage. In tubelights, the high voltage is essential for ionisation of the gas which is present in tubelights.
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.
Air circuit brakers is not used in high voltages because, when comparing the high voltage the dielectric strength of air is low. By nandhagopal theni.ph 7200801043.
Most likely a short circuit will cause no voltage. Due to the high current on a short circuit fault the over current protection of the circuit will trip. This will cut the voltage supply off completely.
chroma circuit, luminance circuit, picture tube, vertical and horizontal circuits, sync circuit, high voltage circuit, low voltage power supply
A high current flows through a short circuit even if there is no voltage change because the resistance across the short circuit is zero.
A potential transformer steps the high voltage down to a level of 120 V to measure them safely and easily.
High voltage switch gear operates in the voltage range of 36 kV and above. Minimum oil circuit breaker, air blast circuit breaker and SF6 (Sulphur hexafluoride) circuit breaker are the three mostly used disconnects for high voltage switchgear.