The inter trip acts when the transformer trips in fault. When the primary breaker tripped on any fault the secondary also tripped immediately and vice versa to protect the transformer.
One an exceptional case is there is breaker trips on over current or earth fault the inter trip will not be enabled.
Bulb will be dark because the line to line voltage was same .If we connect the two bulbs in different phase it will bright.
It depends upon R=ρL/A where area (A) is inversely proportional to resistance (R), so if area (A) increases, R decreases & if R is less the leakage current will take low resistance path so the earth pin should be thicker. It is longer because the The First to make the connection and last to disconnect should be earth Pin. This assures Safety for the person who uses the electrical instrument.
This sound is coming due to ionization (breakdown of air into charged particles) of air around transmission conductor. This effect is called as Corona effect, and it is considered as power loss.
It is Single Phase induction motor which mostly squirrel cage rotor and are capacitor start capacitor run.
Bulbs or devices for AC are designed to operate such that it offers high impedance to AC supply. Normally they have low resistance. When DC supply is applied, due to low resistance, the current through lamp would be so high that it may damage the bulb element.
To avoid voltage drop
Polarity depends on the entering and leaving of the current. Connect one winding to the supply that time the which terminal the current entering is positive and leaves is negative.
The out put SMPS is DC and output of UPS .The SMPS is switched mod power supply used in computers .The SMPS(Switched Mode Power Supply) input is AC its convert ac to dc .The SMPS also covert the high frequency voltage ac to high frequency low voltage by using the transformer .
In the case UPS (Uninterruptible Power Supply) when there is supply available it gives the direct output and also charge the battery .If the supply is not UPS will invert the DC from battery .
NGS is the Neutral Grounding Resistor .its main function to reduce the current during the earth fault.
AGC- Automatic Gain Controller.
AVR- Automatic Voltage Regulation.
AGC will contol the active power by controlling the speed of mechanism by adjusting the inlet valve and blades.
AVR is important part in Synchronous Generators; it controls the output voltage of the generator by controlling its excitation current. Thus it can control the output Reactive Power of the Generator.
It is the Scheduling required by the load despatching center to forecast the hydel and thermal generation
Electrical Notes & Articles