Final answer:
The conduction period of the thyristor in each cycle is calculated by multiplying the duty cycle, which is the ratio of the load voltage to the supply voltage, with the total period of the cycle. The correct conduction period for a 5 kHz signal is 0.0002 seconds.
Step-by-step explanation:
The student's question involves calculating the conduction period of the thyristor in a chopper circuit that is operating on TRC (Time Ratio Control) with a power supply of 3300 V and a frequency of 5 kHz, where the load voltage is 2500 V. To find the conduction period, we first need to calculate the duty cycle which can be derived from the ratio of the load voltage to the supply voltage (D=Vload/Vsupply). The conduction period (Ton) is then the product of the duty cycle (D) and the total period of the cycle (T).
Using the formula T=1/f, where f is the frequency, we find the total period T for a 5 kHz signal is 0.0002 seconds (or 200 microseconds). Therefore, with the given frequency and the relation between load and supply voltage, we can calculate the conduction time. The conduction period (Ton) for the thyristor would be the duration of time it is 'on' or conducting, which is a portion of the total period based on the duty cycle. Since Vload/Vsupply is 2500 V / 3300 V, the duty cycle (D) is approximately 0.7576, and Ton can be calculated by multiplying D by T.
The correct answer is the one that indicates the time for Ton, which is option (a) 0.0002 seconds.