Final answer:
The significance of T1 in engineering and telecommunications is that it denotes 'Transmission System 1,' which is a high-speed transmission system. To transmit 100,000 kW at 480 V, approximately 208,333 A is needed. The power dissipated in transmission lines with 1-ohm resistance is approximately 43.40 GW.
Step-by-step explanation:
The question refers to the significance of T1 in engineering and telecommunications. The correct answer to the question is c) Transmission System 1. T1 lines are a specific type of fiber optic or copper wire that can carry more data than traditional telephone lines. The use of T1 lines in telecommunications allows for the transmission of voice and data over digital lines, which are faster and have higher quality than analog signals.
Regarding the other part of the question:
(a) Current Needed for Transmission
To transmit 1.00×102 MW (which is 100,000 kW) of power at 480 V, the current I needed can be calculated using the formula:
I = Power / Voltage
Thus, I = (1.00×105 kW) / 480 V = 208,333.33 A (approximately).
(b) Power Dissipated in Transmission Lines
For transmission lines with a 1.00-Ω resistance, the power dissipated P can be calculated using the formula:
P = I2 × Resistance
P = (208,333.33 A)2 × 1.00 Ω = 43.40×109 W (which is 43.40 GW) approx.