4) Calculate the value of the resistance Rled in Circuit #1, to ensure that a GREEN LED will have a current of 10 mA Type your answer here 5) Calculate the value of the resistance Rled in Circuit #1, to ensure that a Blue LED will have a current of 10 mA Type your answer 6) Given three LEDs, connected in series as shown in the Circuit #2 (below), calculate the value of the resistance Rled_series to ensure that the current Itotal in the circuit is 10 mA.
Synchronous Generator
In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.
Salient Pole Rotor
Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.
QUESTIONS IN BOLD SHOW ALL WORK 3
Note: all the LEDs in this question are following the Voltage-Current graph shown below
Given the circuit #1 presented above, answer the following questions:
Determine the value of the VD (voltage forward of the LED) for the LEDs RED, VDRED, GREEN, VDGREEN and BLUE, VDBLUE, when the current through the LEDs is 10mA,
VDRED = _______1.75V_____ ; VDGREEN = _______2.2V_____ ; VDBLUE = ____2.5V________
- Is the LED in Circuit #1, connected in the way that will be lighting up or not – Justify your answer
Because the positive end of the LED is at a greater potential than that of the negative end, and the forward potential difference of the LED will be less than the voltage supply, so the LED will be lighting up.
- Calculate the value of the resistance Rled in Circuit #1, to ensure that a RED LED will have a current of 10 mA
Red= 1025ohms
4) Calculate the value of the resistance Rled in Circuit #1, to ensure that a GREEN LED will have a current of 10 mA
Type your answer here
5) Calculate the value of the resistance Rled in Circuit #1, to ensure that a Blue LED will have a current of 10 mA
Type your answer
6) Given three LEDs, connected in series as shown in the Circuit #2 (below), calculate the value of the resistance Rled_series to ensure that the current Itotal in the circuit is 10 mA.
Type your answer here
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