Question

P1=770Вт U1=220В k=0,6 t=1с кпд=97% Q2-? I2-?

Answer 1

Ответ:

Ответ. J1=10; k=J1/J2=10;

Answer 2

To calculate the power (Q2) and current (I2) in the second part of the circuit, we can use the following formulas:

1. Power (Q2) = Efficiency (η) * Input Power (P1)
2. Current (I2) = Power (Q2) / Voltage (U1)

Given:

• Input Power (P1) = 770 Watts
• Efficiency (η) = 97% (0.97 as a decimal)
• Voltage (U1) = 220 Volts

Let's calculate Q2 and I2 step by step:

1. Calculate Power (Q2): Q2 = Efficiency (η) * Input Power (P1) Q2 = 0.97 * 770 Watts Q2 ≈ 747.9 Watts

2. Calculate Current (I2): I2 = Power (Q2) / Voltage (U1) I2 = 747.9 Watts / 220 Volts I2 ≈ 3.4 Amperes

So, in the second part of the circuit:

• Power (Q2) is approximately 747.9 Watts.
• Current (I2) is approximately 3.4 Amperes.